If Mr. Inglethorp did take it, he has had ample time to replace it by now."
Mr. Inglethorp could have replaced the painting with a fake one with all the time he's had.
mnli hypothesis: Mr. Inglethorp could have replaced the painting with a fake one with all the time he's had. premise: If Mr. Inglethorp did take it, he has had ample time to replace it by now."