A child swims with a woman.
two people are riding in a train
The people that swim cannot be riding a train same time.
exists e1 x1 x2.(with(e1,x2) & n_woman(x2) & Actor(e1,x1) & v_swim(e1) & n_child(x1))
exists e1 x1 x2.(in(e1,x2) & n_train(x2) & Actor(e1,x1) & v_ride(e1) & n_people(x1) & card_eq_2(x1))