premise: Three boys are racing against each other.
hypothesis:  Three boys are racing.
explanation_1: Racing implies against each other.
premise_logic: exists e1 x1.(all x2.(n_other(x2) -> against(e1,x2)) & Actor(e1,x1) & v_race(e1) & n_boy(x1) & card_eq_3(x1))
hypothesis_logic: exists e1 x1.(Actor(e1,x1) & v_race(e1) & n_boy(x1) & card_eq_3(x1))
premise_sim: exists e1 x1.(v_race(e1) & n_boy(x1) & card_eq_3(x1) & all x2.(against(e1,x2) | -n_other(x2)) & Actor(e1,x1))
hypothesis_sim: exists e1 x1.(v_race(e1) & n_boy(x1) & card_eq_3(x1) & Actor(e1,x1))