<http://webisa.webdatacommons.org/prov/16489058>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/180989065> .
<http://webisa.webdatacommons.org/180989065>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<docstoc.com> .
<http://webisa.webdatacommons.org/180989065>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/180989065>	<http://www.w3.org/ns/prov#value>	"A histogram is a graph that displays brightness along the horizontal axis (black to white)" .