About: http://webisa.webdatacommons.org/84705418

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	In some embodiments, a surface is desirably free of contaminants, such as petroleum greases and oils, that may cause the pretreatment and coating to be insufficiently adhered to the surface.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es