About: http://webisa.webdatacommons.org/141559481

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	If you use max() in sql queries it will always return a result, whether it is a number or NULL. You will have to check whether the value is a number or not.
http://www.w3.org/ns/prov#wasQuotedFrom	codingforums.com