About: http://webisa.webdatacommons.org/20654461

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	a flat head with a large slot to enable a rider to use a coin or other tool to tighten or loosen the screw.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com