Three children are playing with a ball on a wide expanse of grass.
The three children are sitting at the dinner table, waiting for their mother to set the food down.
If children are playing in grass they are not sitting at a table.
exists e1 s1 x1 x2 x3 x4.(with(e1,x2) & on(x2,x3) & of(x3,x4) & n_grass(x4) & n_expanse(x3) & a_wide(s1) & Theme(s1,x3) & n_ball(x2) & Actor(e1,x1) & v_play(e1) & n_child(x1) & card_eq_3(x1))
exists e2 e1 p1 x1 x2 x3 x4 x5.(n_food(x5) & n_mother(x4) & of(x4,x2) & n_thing(x2) & n_table(x2) & of(x2,x3) & n_dinner(x3) & n_child(x1) & card_eq_3(x1) & for(e1,e2) & Topic(e2,p1) & exists e3 s1.(a_down(s1) & Manner(e3,s1) & Theme(e3,x5) & Actor(e3,x1) & v_set(e3)) & for(e2,x4) & Actor(e2,x1) & v_wait(e2) & at(e1,x2) & Actor(e1,x1) & v_sit(e1))