About: http://webisa.webdatacommons.org/113916436

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	???Potassium, nitrogen and sulfur are the most mobile nutrients,??? Hardy said, ???but even nutrients such as magnesium, which is held more tightly than potassium, can be depleted due to excessive rainfall.
http://www.w3.org/ns/prov#wasQuotedFrom	ncagr.gov