About: http://webisa.webdatacommons.org/38502953

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 cleaning compositions of the invention can contain a divalent ion, such as calcium and magnesium ions, at a level of from 0.05% to 5% by weight, from 0.1% to 1% by weight, or about 0.25% by weight of the composition.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com