<http://webisa.webdatacommons.org/399398806>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<stackoverflow.com> .
<http://webisa.webdatacommons.org/399398806>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/493241054>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/399398806> .
<http://webisa.webdatacommons.org/399398806>	<http://www.w3.org/ns/prov#value>	"Of course the above does not compiles, because there is a type constrain on the first class and none on the second." .