About: http://webisa.webdatacommons.org/203817912

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	The planet is mostly made of hydrogen and helium, but may contain up to 20 Earth masses of heavier elements including rock and water under high pressure.
http://www.w3.org/ns/prov#wasQuotedFrom	ucsb.edu