About: http://webisa.webdatacommons.org/291397349

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	Is it possible to use the shorthand ternary to check whether a variable is set or not instead of whether is evaluates to zero or non-zero?
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com