<http://webisa.webdatacommons.org/prov/135552732>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/250817224> .
<http://webisa.webdatacommons.org/250817224>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/250817224>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<nortonhealthcare.com> .
<http://webisa.webdatacommons.org/250817224>	<http://www.w3.org/ns/prov#value>	"But other factors, such as optic nerve blood supply and nutrition, may also produce optic nerve damage." .