About: http://webisa.webdatacommons.org/399555474

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	Finally, the disease may be caused by some agent external to the organism, such as a chemical that is a toxic agent.
http://www.w3.org/ns/prov#wasQuotedFrom	britannica.com