 When the doctor of the sleep lab utters (19), she claims that the proposition in (20) is true of a particular situation, call it “Sleep Lab”. Sleep Lab is the Austinian topic situation, but it is not the situation that picks out the sleepers. The sleepers might be recruited from a contextually salient (possibly scattered) situation s′ that is related to Sleep Lab via the part relation ≤p and functions as a resource situation for the evaluation of the predicate person introduced by the quantifier phrase everyone. This situation could be the sum of the patients in the lab, for example.