<http://webisa.webdatacommons.org/402304698>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/402304698>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<scu.edu> .
<http://webisa.webdatacommons.org/prov/4271032>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/402304698> .
<http://webisa.webdatacommons.org/402304698>	<http://www.w3.org/ns/prov#value>	"In developing countries, especially in South Asia, groundwater resources are often contaminated by naturally occurring arsenic." .