About: http://webisa.webdatacommons.org/75715826

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 minus sign indicates that there is a NULL value stored in the field (the minus sign is how the NULL value is displayed in BSQL, other applications may do it differently).
http://www.w3.org/ns/prov#wasQuotedFrom	mimer.com