Simplify wording and combine two paragraphs

Author: niklasl

spec/index.html

@@ -315,10 +315,7 @@ <h3>RDF Vocabularies and Namespace IRIs</h3>
     <h3>Triple Terms and Reification</h3>
 
     <p>A <a>triple term</a> is an [=RDF triple=] used as an [=RDF term=]
-      in the [=object=] position of another triple.</p>
-
-    <p>This usage of a <a>triple term</a> only functions as a reference to a
-      <a>proposition</a>, and does not in itself imply its truth. For this
+      in another triple. This use is a reference to a <a>proposition</a>. For this
       triple to also be asserted, it must appear in a graph as an <a>asserted
       triple</a>. This allows for statements to be made about statements
       independent of their assertion within an <a>RDF graph</a>.