A group of boys play soccer on the grass while another looks down from a rock.
The group of boys is watering flowers.
A group of boys can't play soccer while simultaneously be watering flowers.
exists e1 p1 x1 x2 x3 x4.(n_grass(x4) & exists e2 s1 x5 x6.(a_down(s1) & Manner(e2,s1) & from(e2,x6) & n_rock(x6) & Actor(e2,x5) & v_look(e2) & n_thing(x5)) & while(e1,p1) & on(e1,x4) & Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & n_soccer(x3) & of(x1,x2) & n_boy(x2) & n_group(x1))
exists e1 x1 x2 x3.(n_group(x1) & Theme(e1,x3) & Actor(e1,x1) & v_water(e1) & n_flower(x3) & of(x1,x2) & n_boy(x2))