premise: Exactly six members of a skydiving team—Larue, Ohba, Pei, Trevino, Weiss, and Zacny—each dive exactly once, one at a time, from a plane, consistent with the following conditions: Trevino dives from the plane at some time before Weiss does. Larue dives from the plane either first or last. Neither Weiss nor Zacny dives from the plane last. Pei dives from the plane at some time after either Ohba or Larue but not both. If Trevino dives from the plane immediately after Larue, then each of the following could be true EXCEPT:
hypothesis: Ohba dives from the plane third.