| http://www.w3.org/ns/prov#value | - We argue that the truth conditions of a variety of numerical modal and counterfactual sentences place serious constraints on the sorts of items (...) to which numerals, as we ordinarily use them, can be taken to refer: Numerals cannot be taken to refer to objects that exist contingently such as people, mountains, or rivers, but rather must be taken to refer to objects that exist necessarily such a
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