| http://www.w3.org/ns/prov#value | - Youtube, for example, gives access to an unprecedented wealth of learning material accessible from the Youtube Edu channel are videos from world class universities and experts such as MIT, UCLA, Stanford, Harvard, the Open University and UNSW, as well as a wealth of socially generated material on all manner of subjects from relativity through to how to change a tap washer and how to change a car t
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