<http://webisa.webdatacommons.org/196244821>	<http://www.w3.org/ns/prov#value>	"This element is called a leading 1.(3) The leading 1 of each row after the first is positioned to the right of the leading 1 of the previous row.(4) If a column contains a leading 1, then all other elements in that column are 0.Here are some examples of matrices that are not in reduced echelon form.The matrix below violates (1)." .
<http://webisa.webdatacommons.org/prov/304246415>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/196244821> .
<http://webisa.webdatacommons.org/196244821>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/196244821>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<blogspot.com> .