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<http://webisa.webdatacommons.org/192853759>	<http://www.w3.org/ns/prov#value>	"What is mechlorethamine?Mechlorethamine is used to treat the symptoms of several types of cancer." .
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<http://webisa.webdatacommons.org/192853759>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<uwhealth.org> .