A man and woman are sitting on a bench.
The people are sitting on swings.
The people can't be on swings while on a bench.
exists e1 x1 x2 x3 x4.(on(e1,x4) & n_bench(x4) & Actor(e1,x1) & v_sit(e1) & n_woman(x3) & n_man(x2) & subset_of(x3,x1) & subset_of(x2,x1))
exists e1 x1 x2.(n_people(x1) & on(e1,x2) & n_swing(x2) & Actor(e1,x1) & v_sit(e1))