| http://www.w3.org/ns/prov#value | - This falls into the heading and none of the machines is a machine find cancer machine - each have limits and are very dependant on the doctors reading the results - but anyway, a bone scan will also light up for arthritis - which a pet scan which will not. but of course a pet scan will show other non-cancer, in the bone such as small healing activty around fractions or infection - so each machine
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