Little boy who is playing in the sand.
The child is swimming in the crowded pool.
The boy cannot be swimming in a pool while playing in the sand.
exists e1 s1 x1 x2 x3.(n_sand(x3) & a_topic(x1) & in(e1,x3) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_boy(x1) & a_little(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(n_pool(x2) & a_crowded(s1) & Theme(s1,x2) & n_child(x1) & in(e1,x2) & Actor(e1,x1) & v_swim(e1))