About: http://webisa.webdatacommons.org/200070791

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 columns need not to be shown, such as primary key, use method set_col_hidden() to hide those columns.
http://www.w3.org/ns/prov#wasQuotedFrom	phpgrid.com