<http://webisa.webdatacommons.org/212579300>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<stackexchange.com> .
<http://webisa.webdatacommons.org/prov/516175137>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/212579300> .
<http://webisa.webdatacommons.org/212579300>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/53999936>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/212579300> .
<http://webisa.webdatacommons.org/212579300>	<http://www.w3.org/ns/prov#value>	"when b is a scalar and c, a are vectors (Nx1)?" .