premise: People walking through dirt.
hypothesis: They are in the desert.
explanation_1: You can not infer it's in the desert.
explanation_2: There are dirt areas not in the desert.
explanation_3: People walking through dirt doesn't mean its in the desert.
premise_logic: exists e1 x1 x2 x3.(a_topic(x1) & through(e1,x3) & n_dirt(x3) & Actor(e1,x2) & v_walk(e1) & (x1 = x2) & n_people(x1))
hypothesis_logic: exists p1 x1 x2.(n_desert(x2) & n_thing(x1) & in(x1,x2))