--- a/model/comments/lc-ack-robert.txt	Fri Oct 26 12:31:30 2012 +0100
+++ b/model/comments/lc-ack-robert.txt	Fri Oct 26 13:22:18 2012 +0100
@@ -180,8 +180,11 @@
       of derivation is on connecting a generated entity to a used
       entity.") that would add clarity to the definition of
       derivation.
- 
-TODO
+
+Sentence was added to the text explaining the notion of derivation:
+ http://dvcs.w3.org/hg/prov/diff/780b82818bcf/model/prov-dm.html
+
+Acknowledgment  expected
 
 
 ----------------------------------------------------------------------

--- a/model/prov-dm.html	Fri Oct 26 12:31:30 2012 +0100
+++ b/model/prov-dm.html	Fri Oct 26 13:22:18 2012 +0100
@@ -2904,6 +2904,16 @@
 
 <p>Alternate is not  defined as Influence, and therefore does not have an id and attributes.</p>  
 
+<p>
+Note that <a title="alternateOf">alternateOf</a> is a necessarily very general
+relationship that, in reasoning, only states that the two
+alternate entities fix different aspects of some common thing
+(possibly evolving over time), and so there is some relevant
+connection between the provenance of the alternates. In a
+specific application context, <a title="alternateOf">alternateOf</a>, or a subtype of it,
+could allow more inferences.
+</p>
+
 
 <div class="anexample" id="anexample-alternate">
 <p>
@@ -3914,6 +3924,7 @@
 <li> <a href="http://www.w3.org/2011/prov/track/issues/514">ISSUE-514</a>: added links to the attributes listed in the secondary element table. Also removed PrimarySource, Quotation, Revision.
 <li> <a href="http://www.w3.org/2011/prov/track/issues/502">ISSUE-502</a>: Added sentence in section 2.1.2 explaining that the focus
       of derivation is on connecting a generated entity to a used  entity.
+<li> <a href="http://www.w3.org/2011/prov/track/issues/526">ISSUE-526</a>: Added sentence clarifying sentence in section 5.5.2.
 </ul>
 
 </section>