f are(A) ∧ airline(B) → on(A, B) meal(A) ∧ f light(B) → on(A, B) f light(A) ∧ day(B) → on(A, B) f light(A) ∧ airline(B) → on(A, B) It is an old observation that in order to choose the correct reading of an ambiguous sentence, we need a great deal of knowledge about the world.
the observation that disambiguation decisions depend on knowledge of the world can be made to cut both ways: just as we need a lot of knowledge of the world to make disambiguation decisions, so a given disambiguation decision can be interpreted as telling us a lot about the way we view the structure of the world.