About: http://webisa.webdatacommons.org/419950734

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	In other words, there is a blue piece in at least one of the four corners.
http://www.w3.org/ns/prov#wasQuotedFrom	puzzles.com