About: http://webisa.webdatacommons.org/137549628

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	Just another note that shell=True is also unnecessary since the command you are passing is a string and a shell must be spawned to evaluate it.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com