Structured discourse reference to propositions: Entailment particles and modal subordination in dynamic type logic
نویسندگان
چکیده
We are interested in the following features of this discourse. First, we want to capture the meaning of the entailment particle therefore, which relates the content of the premise (1a) and the content of the conclusion (1b) and requires the latter to be entailed by the former. I take the content of a sentence to be truth-conditional in nature, i.e., to be the set of possible worlds in which the sentence is true, and entailment to be content inclusion, i.e., (1a) entails (1b) iff for any world w, if (1a) is true in w, so is (1b). Second, we are interested in the meanings of (1a) and (1b). I take meaning to be context-change potential, i.e., to encode both content (truth-conditions) and anaphoric potential. Thus, on the one hand, we are interested in the contents of (1a) and (1b). They are both modal quantifications: (1a) involves a circumstantial modal base (to use
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