<http://webisa.webdatacommons.org/81743449>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/302203594>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/81743449> .
<http://webisa.webdatacommons.org/81743449>	<http://www.w3.org/ns/prov#value>	"An arc lamp is an optical source used in many kinds of instruments to provide high levels of brightness." .
<http://webisa.webdatacommons.org/81743449>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<nih.gov> .