children playing at the beach
Children are building sandcastles on the beach.
children playing at the beach does not infer they are building sandcastles on the beach
exists e1 x1 x2 x3.(n_beach(x3) & a_topic(x1) & at(e1,x3) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_child(x1))
exists e1 x1 x2 x3.(n_beach(x3) & on(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_build(e1) & n_sandcastle(x2) & n_child(x1))