premise: A race cars muffler catches on fire.
hypothesis: There is a fire
explanation_1: A muffler catches fire.
explanation_2: If a muffler catches on fire, a fire would have to be present.
explanation_3: muffler catches on fire so  There is a fire
premise_logic: exists e1 x1 x2 x3 x4.(on(e1,x4) & n_fire(x4) & Theme(e1,x3) & Actor(e1,x1) & v_muffler(e1) & n_catch(x3) & n_car(x1) & of(x1,x2) & n_race(x2))
hypothesis_logic: exists p1 x1 x2.((x1 = x2) & n_fire(x2))