About: http://webisa.webdatacommons.org/199080321

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	You may ask why we put a [0] before we requested each value, and the reason is the query function returns an array of all the records, and each record is an array, so we need to access the first array in our results variable.
http://www.w3.org/ns/prov#wasQuotedFrom	tutsplus.com