About: http://webisa.webdatacommons.org/212428944

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	Trenches 19 are formed in the areas not covered by the first mask 51 by a process such as etching.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com