| http://www.w3.org/ns/prov#value | - A further difficulty is that PISA was administered to 65 nations, including many in the developing world, and we don???t know whether the public, when asked the PDK question, was thinking about the developing world when asked about ???most of the nations.??? If the comparison is with the industrialized world (that is, the 34 members of the Organization for Economic Co-operation and Development, wi
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