About: http://webisa.webdatacommons.org/439804406

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	However, there is a limit to a superconductor's capability to exclude external magnetic fields.
http://www.w3.org/ns/prov#wasQuotedFrom	tesla3.com