premise: Two people ride yellow motorcycles.
hypothesis: Two people are on motorcycles.
explanation_1: Two people are on yellow motorcycles.
explanation_2: Two people must be on motorcycles in order to ride motorcycles.
explanation_3: Two people ride  motorcycles means they are on motorcycles
premise_logic: exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_motorcycle(x2) & a_yellow(s1) & Theme(s1,x2) & n_people(x1) & card_eq_2(x1))
hypothesis_logic: exists p1 x1.(exists x2.(on(x1,x2) & n_motorcycle(x2)) & n_people(x1) & card_eq_2(x1))