About: http://webisa.webdatacommons.org/248639332

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	Different underground formations and rock types all have a slightly different effect on the gravitational field that surrounds the Earth.
http://www.w3.org/ns/prov#wasQuotedFrom	dot.gov