premise: A dirt biker with number 625 is racing on a course.
hypothesis: A dirt biker is in the lead of the race.
explanation_1: A dirt biker with number 625 is racing on a course does not imply he  is in the lead of the race
premise_logic: exists e1 x1 x2 x3 x4.(on(e1,x4) & n_course(x4) & Actor(e1,x1) & v_race(e1) & with(x1,x3) & n_number(x3) & card_eq_625(x3) & n_biker(x1) & of(x1,x2) & n_dirt(x2))
hypothesis_logic: exists p1 x1 x2 x3 x4.(n_race(x4) & n_lead(x3) & in(x1,x3) & of(x3,x4) & n_biker(x1) & of(x1,x2) & n_dirt(x2))
premise_sim: exists e1 x1 x2 x3 x4.(with(x1,x3) & v_race(e1) & on(e1,x4) & of(x1,x2) & n_number(x3) & n_dirt(x2) & n_course(x4) & n_biker(x1) & card_eq_625(x3) & Actor(e1,x1))
hypothesis_sim: exists x1 x2 x3 x4.(of(x3,x4) & of(x1,x2) & n_race(x4) & n_lead(x3) & n_dirt(x2) & n_biker(x1) & in(x1,x3))