premise: One boy is driving a play tractor while the other boy jumps off the back of the play tractor.
hypothesis: The two boys are playing.
explanation_1: Driving a play tractor implies playing, and one boy and other boy are two boys.
explanation_2: A driving a play tractor and another who jumps on the back of it are playing.
explanation_3: If the boys are driving an jumping off a play tractor, they are playing.
premise_logic: exists e1 p1 x1 x2 x3 x4 x5 x6.(n_back(x6) & exists e2.(Actor(e2,x4) & v_tractor(e2) & off(x4,x6) & of(x6,x2)) & n_play(x2) & n_play(x2) & -(x4 = x5) & n_jump(x5) & of(x5,x1) & n_boy(x1) & n_boy(x1) & n_jump(x4) & of(x4,x1) & while(e1,p1) & Time(e1,x3) & n_tractor(x3) & Theme(e1,x2) & Actor(e1,x1) & v_drive(e1) & card_eq_1(x1))
hypothesis_logic: exists e1 x1.(n_boy(x1) & card_eq_2(x1) & Actor(e1,x1) & v_play(e1))
premise_sim: exists e1 p1 x1 x2 x3 x4 x5 x6.(while(e1,p1) & v_drive(e1) & of(x5,x1) & of(x4,x1) & n_tractor(x3) & n_play(x2) & n_jump(x5) & n_jump(x4) & n_boy(x1) & n_back(x6) & exists e2.(v_tractor(e2) & off(x4,x6) & of(x6,x2) & Actor(e2,x4)) & card_eq_1(x1) & Time(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & -(x4 = x5))
hypothesis_sim: exists e1 x1.(v_play(e1) & n_boy(x1) & card_eq_2(x1) & Actor(e1,x1))