About: http://webisa.webdatacommons.org/448168182

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	And they weren???t known until Priestly found that air is a component of the world, it???s got nitrogen, and so on, and you learn about photosynthesis and so on.
http://www.w3.org/ns/prov#wasQuotedFrom	aihub.net