premise: Racing on wet road while man hangs on back.
hypothesis: Racing on a wet road.
explanation_1: On wet road is a rephrasing of on a wet road.
explanation_2: Racing on wet road implies racing on a wet road.
explanation_3: Racing on wet road is racing on a  wet road
premise_logic: exists e1 p1 s1 x1 x2.(exists e2 x3 x4.(on(e2,x4) & n_back(x4) & Actor(e2,x3) & v_hang(e2) & n_man(x3)) & while(e1,p1) & on(e1,x2) & n_road(x2) & a_wet(s1) & Theme(s1,x2) & Actor(e1,x1) & v_race(e1) & n_thing(x1))
hypothesis_logic: exists e1 s1 x1 x2.(on(e1,x2) & n_road(x2) & a_wet(s1) & Theme(s1,x2) & Actor(e1,x1) & v_race(e1) & n_thing(x1))