About: http://webisa.webdatacommons.org/217639714

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	FIG. 3 schematically shows a magnetic head generally designated at 20 as comprising core halves 21 and 22 formed of a ferromagnetic material such as ferrite.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com