About: http://webisa.webdatacommons.org/187625118

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	However, there are concerns about the methodology implemented in the earlier studies to detect some of these compounds, such as hydrocarbons and squalene.
http://www.w3.org/ns/prov#wasQuotedFrom	pubmedcentralcanada.ca