<http://webisa.webdatacommons.org/315109099>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/315109099>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/315109099>	<http://www.w3.org/ns/prov#value>	"Only when the front and rear detector devices are connected together by a circuit including the counter can the integral system so formed determine whether the material was released by the train." .
<http://webisa.webdatacommons.org/prov/437553985>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/315109099> .