chat
presupposed open proposition (POP) (inf)
a.k.a. POP
in identificational information packaging, the proposition with an unknown part (hence open proposition) which is already part of the shared knowledge of the speaker and hearer (that is, it is presupposed). Example: in It was Jack who stole my cookies!, the presupposed open proposition is
X stole my cookies; in the appropriate discourse context, it is already known that someone stole my cookies. (Section 11.4.1)
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