Two people are on a motorcycle in the rain.
The two people on the motorcycle are related.
Although they are on a motorcycle, it does not imply they are related.
exists p1 x1 x2.(n_rain(x2) & in(p1,x2) & exists x3.(on(x1,x3) & n_motorcycle(x3)) & n_people(x1) & card_eq_2(x1))
exists e1 x1 x2.(n_motorcycle(x2) & n_people(x1) & card_eq_2(x1) & Theme(e1,x1) & v_relate(e1) & on(x1,x2))