About: http://webisa.webdatacommons.org/215880962

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	The magnitude of ocean biological productivity depends on the availability of key nutrients, including nitrogen, phosphorus and metals such as iron.
http://www.w3.org/ns/prov#wasQuotedFrom	sciencedaily.com