<http://webisa.webdatacommons.org/141814777>	<http://www.w3.org/ns/prov#value>	"while it is difficult to provide a light source, such as a laser diode," .
<http://webisa.webdatacommons.org/141814777>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<faqs.org> .
<http://webisa.webdatacommons.org/prov/156183208>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/141814777> .
<http://webisa.webdatacommons.org/141814777>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .