<http://webisa.webdatacommons.org/208578724>	<http://www.w3.org/ns/prov#value>	"Why should we assume that there are such things as electrons, and that they are negatively charged?" .
<http://webisa.webdatacommons.org/208578724>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/208578724>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<nus.edu.sg> .
<http://webisa.webdatacommons.org/prov/359012472>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/208578724> .