<http://webisa.webdatacommons.org/prov/27949311>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/222737342> .
<http://webisa.webdatacommons.org/prov/432472895>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/222737342> .
<http://webisa.webdatacommons.org/222737342>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/222737342>	<http://www.w3.org/ns/prov#value>	"Backed by ads as well as donations by Google and the Bill and Melinda Gates Foundation, the not-for-profit Khan Academy offers over 3,300 short instructional videos on basic math, biology, chemistry, physics and other subjects." .
<http://webisa.webdatacommons.org/222737342>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<pcadvisor.co.uk> .