A little boy in a purple shirt and blue shorts playing with orange balls.
A boy is mowing the grass.
Playing with balls and mowing the lawn cannot be done at the same time.
exists e1 s1 s2 s3 x1 x2 x3 x4 x5 x6 x7.(a_topic(x1) & in(x1,x2) & subset_of(x4,x2) & with(e1,x6) & n_ball(x6) & of(x6,x7) & n_orange(x7) & Actor(e1,x5) & v_play(e1) & (x4 = x5) & n_shorts(x4) & a_blue(s3) & Theme(s3,x4) & subset_of(x3,x2) & n_shirt(x3) & a_purple(s2) & Theme(s2,x3) & n_boy(x1) & a_little(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_grass(x2) & Theme(e1,x2) & Actor(e1,x1) & v_mow(e1) & n_boy(x1))