About: http://webisa.webdatacommons.org/301042509

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	Nitrogen is the most abundant on the surface, but also the most difficult to detect because it is almost transparent in the near-infrared and its signal is swamped by the methane spectra.
http://www.w3.org/ns/prov#wasQuotedFrom	planetary.org