About: http://webisa.webdatacommons.org/170947584

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	Though nitrogen accounts for some constituents of the human body, such as vitamins, proteins, hormones and enzymes, its character is not entirely pristine.
http://www.w3.org/ns/prov#wasQuotedFrom	whycenter.com