diff --git a/exercises/sublist/canonical-data.json b/exercises/sublist/canonical-data.json
index b9a825c2b7..006b41f9ae 100644
--- a/exercises/sublist/canonical-data.json
+++ b/exercises/sublist/canonical-data.json
@@ -1,101 +1,138 @@
 {
-	"#": [
-		"Lists are ordered and sequential.",
-		"https://en.wikipedia.org/wiki/List_%28abstract_data_type%29",
-		"",
-		"Depending on your language, there may need to be some translation",
-		"to go from the JSON array to the list representation.",
-		"The expectation can be used to generate an expected value",
-		"based on your implementation (such as a constant 'EQUAL', 'SUBLIST', etc.).",
-		"",
-		"If appropriate for your track, you'll need to ensure that no pair of expected values are equal.",
-		"Otherwise, an implementation that always returns a constant value may falsely pass the tests.",
-		"See https://github.com/exercism/xpython/issues/342"
-	],
-	"cases": [{
-		"description": "empty lists",
-		"list_one": [],
-		"list_two": [],
-		"expectation": "equal"
-	}, {
-		"description": "empty list within non empty list",
-		"list_one": [],
-		"list_two": [1, 2, 3],
-		"expectation": "sublist"
-	}, {
-		"description": "non empty list contains empty list",
-		"list_one": [1, 2, 3],
-		"list_two": [],
-		"expectation": "superlist"
-	}, {
-		"description": "list equals itself",
-		"list_one": [1, 2, 3],
-		"list_two": [1, 2, 3],
-		"expectation": "equal"
-	}, {
-		"description": "different lists",
-		"list_one": [1, 2, 3],
-		"list_two": [2, 3, 4],
-		"expectation": "unequal"
-	}, {
-		"description": "false start",
-		"list_one": [1, 2, 5],
-		"list_two": [0, 1, 2, 3, 1, 2, 5, 6],
-		"expectation": "sublist"
-	}, {
-		"description": "consecutive",
-		"list_one": [1, 1, 2],
-		"list_two": [0, 1, 1, 1, 2, 1, 2],
-		"expectation": "sublist"
-	}, {
-		"description": "sublist at start",
-		"list_one": [0, 1, 2],
-		"list_two": [0, 1, 2, 3, 4, 5],
-		"expectation": "sublist"
-	}, {
-		"description": "sublist in middle",
-		"list_one": [2, 3, 4],
-		"list_two": [0, 1, 2, 3, 4, 5],
-		"expectation": "sublist"
-	}, {
-		"description": "sublist at end",
-		"list_one": [3, 4, 5],
-		"list_two": [0, 1, 2, 3, 4, 5],
-		"expectation": "sublist"
-	}, {
-		"description": "at start of superlist",
-		"list_one": [0, 1, 2, 3, 4, 5],
-		"list_two": [0, 1, 2],
-		"expectation": "superlist"
-	}, {
-		"description": "in middle of superlist",
-		"list_one": [0, 1, 2, 3, 4, 5],
-		"list_two": [2, 3],
-		"expectation": "superlist"
-	}, {
-		"description": "at end of superlist",
-		"list_one": [0, 1, 2, 3, 4, 5],
-		"list_two": [3, 4, 5],
-		"expectation": "superlist"
-	}, {
-		"description": "first list missing element from second list",
-		"list_one": [1, 3],
-		"list_two": [1, 2, 3],
-		"expectation": "unequal"
-	}, {
-		"description": "second list missing element from first list",
-		"list_one": [1, 2, 3],
-		"list_two": [1, 3],
-		"expectation": "unequal"
-	}, {
-		"description": "order matters to a list",
-		"list_one": [1, 2, 3],
-		"list_two": [3, 2, 1],
-		"expectation": "unequal"
-	}, {
-		"description": "same digits but different numbers",
-		"list_one": [1, 0, 1],
-		"list_two": [10, 1],
-		"expectation": "unequal"
-	}]
+  "exercise": "sublist",
+  "version": "1.0.0",
+  "comments": [
+    "Lists are ordered and sequential.",
+    "https://en.wikipedia.org/wiki/List_%28abstract_data_type%29",
+    "",
+    "Depending on your language, there may need to be some translation",
+    "to go from the JSON array to the list representation.",
+    "The expectation can be used to generate an expected value",
+    "based on your implementation (such as a constant 'EQUAL', 'SUBLIST', etc.).",
+    "",
+    "If appropriate for your track, you'll need to ensure that no pair of expected values are equal.",
+    "Otherwise, an implementation that always returns a constant value may falsely pass the tests.",
+    "See https://github.com/exercism/xpython/issues/342"
+  ],
+  "cases": [
+    {
+      "description": "empty lists",
+      "property": "sublist",
+      "listOne": [],
+      "listTwo": [],
+      "expected": "equal"
+    },
+    {
+      "description": "empty list within non empty list",
+      "property": "sublist",
+      "listOne": [],
+      "listTwo": [1, 2, 3],
+      "expected": "sublist"
+    },
+    {
+      "description": "non empty list contains empty list",
+      "property": "sublist",
+      "listOne": [1, 2, 3],
+      "listTwo": [],
+      "expected": "superlist"
+    },
+    {
+      "description": "list equals itself",
+      "property": "sublist",
+      "listOne": [1, 2, 3],
+      "listTwo": [1, 2, 3],
+      "expected": "equal"
+    },
+    {
+      "description": "different lists",
+      "property": "sublist",
+      "listOne": [1, 2, 3],
+      "listTwo": [2, 3, 4],
+      "expected": "unequal"
+    },
+    {
+      "description": "false start",
+      "property": "sublist",
+      "listOne": [1, 2, 5],
+      "listTwo": [0, 1, 2, 3, 1, 2, 5, 6],
+      "expected": "sublist"
+    },
+    {
+      "description": "consecutive",
+      "property": "sublist",
+      "listOne": [1, 1, 2],
+      "listTwo": [0, 1, 1, 1, 2, 1, 2],
+      "expected": "sublist"
+    },
+    {
+      "description": "sublist at start",
+      "property": "sublist",
+      "listOne": [0, 1, 2],
+      "listTwo": [0, 1, 2, 3, 4, 5],
+      "expected": "sublist"
+    },
+    {
+      "description": "sublist in middle",
+      "property": "sublist",
+      "listOne": [2, 3, 4],
+      "listTwo": [0, 1, 2, 3, 4, 5],
+      "expected": "sublist"
+    },
+    {
+      "description": "sublist at end",
+      "property": "sublist",
+      "listOne": [3, 4, 5],
+      "listTwo": [0, 1, 2, 3, 4, 5],
+      "expected": "sublist"
+    },
+    {
+      "description": "at start of superlist",
+      "property": "sublist",
+      "listOne": [0, 1, 2, 3, 4, 5],
+      "listTwo": [0, 1, 2],
+      "expected": "superlist"
+    },
+    {
+      "description": "in middle of superlist",
+      "property": "sublist",
+      "listOne": [0, 1, 2, 3, 4, 5],
+      "listTwo": [2, 3],
+      "expected": "superlist"
+    },
+    {
+      "description": "at end of superlist",
+      "property": "sublist",
+      "listOne": [0, 1, 2, 3, 4, 5],
+      "listTwo": [3, 4, 5],
+      "expected": "superlist"
+    },
+    {
+      "description": "first list missing element from second list",
+      "property": "sublist",
+      "listOne": [1, 3],
+      "listTwo": [1, 2, 3],
+      "expected": "unequal"
+    },
+    {
+      "description": "second list missing element from first list",
+      "property": "sublist",
+      "listOne": [1, 2, 3],
+      "listTwo": [1, 3],
+      "expected": "unequal"
+    },
+    {
+      "description": "order matters to a list",
+      "property": "sublist",
+      "listOne": [1, 2, 3],
+      "listTwo": [3, 2, 1],
+      "expected": "unequal"
+    },
+    {
+      "description": "same digits but different numbers",
+      "property": "sublist",
+      "listOne": [1, 0, 1],
+      "listTwo": [10, 1],
+      "expected": "unequal"
+    }
+  ]
 }