About: http://webisa.webdatacommons.org/18617986

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	Reply Marcus Wong says: March 17, 2015 at 11:14 am Helium is an element that is rare on Earth, due to it being able to escape gravity and leak away into space:
http://www.w3.org/ns/prov#wasQuotedFrom	checkerboardhill.com