Removing 'sometimes' from statement of partial conformance

guidelines/index.html

@@ -509,7 +509,7 @@ <h3>Optional Components of a Conformance Claim </h3>
 
             <section id="conformance-partial">
                 <h2>Statement of Partial Conformance - Third Party Content</h2>
-                <p>Sometimes, Web pages are created that will later have additional content added to them. For example, an email program, a blog, an article that allows users to add comments, or applications supporting user-contributed content. Another example would be a page, such as a portal or news site, composed of content aggregated from multiple contributors, or sites that automatically insert content from other sources over time, such as when advertisements are inserted dynamically.</p>
+                <p>Web pages that will later have additional content added can use a 'statement of partial conformance'. For example, an email program, a blog, an article that allows users to add comments, or applications supporting user-contributed content. Another example would be a page, such as a portal or news site, composed of content aggregated from multiple contributors, or sites that automatically insert content from other sources over time, such as when advertisements are inserted dynamically.</p>
                 <p>In these cases, it is not possible to know at the time of original posting what the uncontrolled content of the pages will be. It is important to note that the uncontrolled content can affect the accessibility of the controlled content as well. Two options are available:</p>
                 <ol>
                     <li>