About: http://webisa.webdatacommons.org/11743897

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	If the ratio is determined to be an unsatisfactory percentage, then it is adjusted to a proper ratio by the addition of nitrogen, urea, or other suitable materials.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com