premise: Two motorcycle racers are driving on a race course.
hypothesis: There are two racers on a race course.
explanation_1: Motorcycle racers and just racers may be different type of vehicle, and the racers could be walking on the race course and not driving.
premise_logic: exists e1 x1 x2 x3 x4.(on(e1,x3) & n_course(x3) & of(x3,x4) & n_race(x4) & Actor(e1,x1) & v_drive(e1) & n_racer(x1) & of(x1,x2) & n_motorcycle(x2) & card_eq_2(x1))
hypothesis_logic: exists p1 x1 x2 x3 x4.((x1 = x2) & on(x2,x3) & n_course(x3) & of(x3,x4) & n_race(x4) & n_racer(x2) & card_eq_2(x2))
premise_sim: exists e1 x1 x2 x3 x4.(v_drive(e1) & on(e1,x3) & of(x3,x4) & of(x1,x2) & n_racer(x1) & n_race(x4) & n_motorcycle(x2) & n_course(x3) & card_eq_2(x1) & Actor(e1,x1))
hypothesis_sim: exists x1 x2 x3 x4.(on(x2,x3) & of(x3,x4) & n_racer(x2) & n_race(x4) & n_course(x3) & card_eq_2(x2) & (x1 = x2))