<http://webisa.webdatacommons.org/251782215>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<ndsu.edu> .
<http://webisa.webdatacommons.org/251782215>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/323142279>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/251782215> .
<http://webisa.webdatacommons.org/251782215>	<http://www.w3.org/ns/prov#value>	"The quality of water was then, and is still, bad, mostly because the water contains saltpeter." .