--- a/examples/eg-30-roles-in-algebraic-division/rdf/eg-30-roles-in-algebraic-division.ttl	Tue May 29 13:13:52 2012 -0400
+++ b/examples/eg-30-roles-in-algebraic-division/rdf/eg-30-roles-in-algebraic-division.ttl	Tue May 29 13:26:41 2012 -0400
@@ -28,7 +28,7 @@
    a prov:Activity, :Division;
    prov:used      :dividend,       # 
                   :divisor;        # These four involvements are unqualified.
-   prov:generated :quotient;       # i.e., we're not sure exactly how they were
+   prov:generated :quotient,       # i.e., we're not sure exactly how they were
                   :scratch-paper;  # involved with the :division Activity.
 
    prov:qualifiedUsage [           # The unqualified involvements can be qualified