About: http://webisa.webdatacommons.org/120920825

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	I think thumb wins out in the end because the singular is a bit simpler, and thumbs do not have so many other associations that might confuse the imagery.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com