About: http://webisa.webdatacommons.org/413274666

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 mechanical pencil is a pencil with a replaceable and mechanically extendable solid pigment core called a lead.
http://www.w3.org/ns/prov#wasQuotedFrom	engineeringdrawing.org