A small boy runs in a large field of grass.
The boy is swimming in a pool.
A boy can't be running and swimming at the same time.
exists e1 s1 s2 x1 x2 x3.(in(e1,x2) & of(x2,x3) & n_grass(x3) & n_field(x2) & a_large(s2) & Theme(s2,x2) & Actor(e1,x1) & v_run(e1) & n_boy(x1) & a_small(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_boy(x1) & in(e1,x2) & n_pool(x2) & Actor(e1,x1) & v_swim(e1))