About: http://webisa.webdatacommons.org/298025923

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 first one is that Mars' atmosphere is composed mainly of carbon dioxide, which makes it hard for conventional aircraft to function because most conventional aircraft rely on oxygen-breathing motors.
http://www.w3.org/ns/prov#wasQuotedFrom	sciencedaily.com