<http://webisa.webdatacommons.org/423494814>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<aip.org> .
<http://webisa.webdatacommons.org/prov/74231292>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/423494814> .
<http://webisa.webdatacommons.org/423494814>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/423494814>	<http://www.w3.org/ns/prov#value>	"There was a great deal of cooperation between the two countries on defending against it the magnetic mine, which, at that time, was principally degaussing of one sort or another." .