About: http://webisa.webdatacommons.org/137148474

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	In such a stream, the isobutylene content is often relatively low and may vary from time to time, particularly if the stream is received directly from the output of the fluid catalytic cracking unit.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com