Child plays in a city fountain.
A child is swimming in a pool.
a city fountain is not a swimming pool
exists e1 x1 x2 x3.(in(e1,x2) & n_fountain(x2) & of(x2,x3) & n_city(x3) & Actor(e1,x1) & v_play(e1) & n_child(x1))
exists e1 x1 x2.(in(e1,x2) & n_pool(x2) & Actor(e1,x1) & v_swim(e1) & n_child(x1))