<http://webisa.webdatacommons.org/48852240>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/54522269>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/48852240> .
<http://webisa.webdatacommons.org/48852240>	<http://www.w3.org/ns/prov#value>	"If M is a matrix, return M; otherwise, signal an error." .
<http://webisa.webdatacommons.org/48852240>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<sourceforge.net> .