About: http://webisa.webdatacommons.org/208815150

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 engaging structure of the cells can include one or more holes 540, openings, slots, slits, notches, recesses, indentations, receptacles, grooves, protrusions, or other structure.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com