Children in a field at dusk.
Children playing in a field.
Not all Children in a field at dusk are playing in a field.
exists x1 x2 x3.(a_topic(x1) & at(x1,x3) & n_dusk(x3) & in(x1,x2) & n_field(x2) & n_child(x1))
exists e1 x1 x2 x3.(a_topic(x1) & in(e1,x3) & n_field(x3) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_child(x1))