Children are eating various stuff at a park.
Children are playing with guns.
Children cannot be eating and playing at the same time.
exists e1 s1 x1 x2 x3.(at(e1,x3) & n_park(x3) & Theme(e1,x2) & Actor(e1,x1) & v_eat(e1) & n_stuff(x2) & a_various(s1) & Theme(s1,x2) & n_child(x1))
exists e1 x1 x2.(with(e1,x2) & n_gun(x2) & Actor(e1,x1) & v_play(e1) & n_child(x1))