premise: A bulldozer is working on a building.
hypothesis: There is a bulldozer.
explanation_1: For a bulldozer to work on a building, it must exist.
premise_logic: exists e1 x1 x2.(on(e1,x2) & n_building(x2) & Actor(e1,x1) & v_work(e1) & n_bulldozer(x1))
hypothesis_logic: exists p1 x1 x2.((x1 = x2) & n_bulldozer(x2))
premise_sim: exists e1 x1 x2.(v_work(e1) & on(e1,x2) & n_bulldozer(x1) & n_building(x2) & Actor(e1,x1))
hypothesis_sim: exists x1 x2.(n_bulldozer(x2) & (x1 = x2))