<http://webisa.webdatacommons.org/prov/380221437>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/47180240> .
<http://webisa.webdatacommons.org/47180240>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<sagemath.org> .
<http://webisa.webdatacommons.org/47180240>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/47180240>	<http://www.w3.org/ns/prov#value>	"If category is a list or tuple, a JoinCategory is" .