About: http://webisa.webdatacommons.org/75148406

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 pen head 180 is made of soft materials, such as rubber or plastic; a common trait of them is their shapes deformed under pressure, and restoring as the pressure releases.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com