About: http://webisa.webdatacommons.org/424556812

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	He considers many elements including carbon, trace elements such as lead and major elements such as nitrogen and calcium.
http://www.w3.org/ns/prov#wasQuotedFrom	sciencedaily.com