A man and woman kiss on a train.
A couple holds hands in a park.
The couple kiss is not the same as the couple holds hands.
exists s1 x1 x2 x3 x4.(a_topic(s1) & subset_of(x2,s1) & on(x2,x4) & n_train(x4) & n_kiss(x2) & of(x2,x3) & n_woman(x3) & subset_of(x1,s1) & n_man(x1))
exists e1 x1 x2 x3.(in(e1,x3) & n_park(x3) & Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & n_hand(x2) & n_couple(x1))