About: http://webisa.webdatacommons.org/70118165

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	Difference between atom, element, molecule and compound?A chemical compound is a substance composed of two or more different elements chemically bonded ... more elements combined in a definite fixed proportion.
http://www.w3.org/ns/prov#wasQuotedFrom	answerparty.com