premise: A person on a motorcycle.
hypothesis: a couple on a motorcycle
explanation_1: A couple means more than one person.
explanation_2: A person represents one and couple represents two persons.
explanation_3: A person means only one and a couple means two.
premise_logic: exists x1 x2.(a_topic(x1) & on(x1,x2) & n_motorcycle(x2) & n_person(x1))
hypothesis_logic: exists x1 x2.(a_topic(x1) & on(x1,x2) & n_motorcycle(x2) & n_couple(x1))
premise_sim: exists x1 x2.(on(x1,x2) & n_person(x1) & n_motorcycle(x2) & a_topic(x1))
hypothesis_sim: exists x1 x2.(on(x1,x2) & n_motorcycle(x2) & n_couple(x1) & a_topic(x1))