<http://webisa.webdatacommons.org/prov/39134844>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/143934572> .
<http://webisa.webdatacommons.org/143934572>	<http://www.w3.org/ns/prov#value>	"After all, adult physicists (in particle physics and other fields that depend on relativity) often use units in which $c=1$." .
<http://webisa.webdatacommons.org/143934572>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<stackexchange.com> .
<http://webisa.webdatacommons.org/143934572>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .