About: http://webisa.webdatacommons.org/368209380

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	They are made out of materials such as ceramic (strontium ferrite), alnico (aluminum, nickel, and cobalt), rare earth (samarium cobalt and neodymium) and flexible rubber-like material.
http://www.w3.org/ns/prov#wasQuotedFrom	magnetsource.com