About: http://webisa.webdatacommons.org/22445236

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	The one case current databases cannot handle (because they do not support relation attributes, is when the thing to be stored is a set whose cardinality may vary.
http://www.w3.org/ns/prov#wasQuotedFrom	c2.com