| http://www.w3.org/ns/prov#value | - However, if I want to use the same context key to discover the width of the screen, then he is probably not something I can know because there wasn't enough evidence to identify the hardware. (Correct me if I am wrong, but Jos?? seems to suggest that if I ask this question, then what I should get back is a set of all possible values for all devices in which this browser is known to operate.)
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