About: http://webisa.webdatacommons.org/255058679

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	But it sits very, very deep in the Sun's gravity well, and Mercury is the smallest planet, with only about 5% the mass of Earth.
http://www.w3.org/ns/prov#wasQuotedFrom	planetary.org