diff --git a/spec/index.html b/spec/index.html
index ca92fb8..0e6c5dc 100644
--- a/spec/index.html
+++ b/spec/index.html
@@ -281,11 +281,11 @@
 
     <p>
       <strong>Methods</strong><br>
-      The document defines constraints on YAML so that any YAML-LD
-      document can be represented in JSON-LD. This is because YAML is
-      more expressive than JSON, both in terms of available data types
-      and the document structure. The document also registers the
-      <code>application/ld+yaml</code> media type.
+      This document defines constraints on YAML so that any YAML-LD
+      document can be represented in JSON-LD. This is necessary
+      because YAML is more expressive than JSON, in terms of both
+      available data types and document structure. This document
+      also registers the <code>application/ld+yaml</code> media type.
     </p>
 
     <p>