--- a/primer/Primer.html	Thu Oct 20 15:09:48 2011 +0100
+++ b/primer/Primer.html	Thu Oct 20 15:10:06 2011 +0100
@@ -205,7 +205,7 @@
    <section>
     <h3>Complementarity</h3>
     <p>
-    Several asserted entities can be characterizing the same thing, in
+    Several asserted entities could be characterizing the same thing, in
     particular when entities are asserted by different <em>accounts</em> or over
     different time periods. If two such entities have <em>overlapping
     lifespans</em>, and the first entity have some <em>attributes</em> that