About: http://webisa.webdatacommons.org/373022035

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	Apparently, one of the problems with this is Mars's weak gravity, which would make it more of a challenge to sustain a thicker atmosphere.
http://www.w3.org/ns/prov#wasQuotedFrom	phys.org