About: http://webisa.webdatacommons.org/175340045

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	Since shoes, boots or even potentially hockey sticks or other rackets may contain metal, a slightly more sophisticated sensor would only detect magnetic fields generated by an external source.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com