About: http://webisa.webdatacommons.org/28628996

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	zed as O2 and O3.[2] In the early 20th century it was recognized that other cases such as carbon were due to differences in crystal structure.
http://www.w3.org/ns/prov#wasQuotedFrom	wikipedia.org