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Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	For instance, in Emacs C-c ; comments (or uncomments) the region (see e.g. http://www.gnu.org/software/auctex/manual/auctex/Commenting.html#Commenting for details).
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com