Several kids are sitting down and holding basketballs
The kids are in the gym at their school about to play.
Kids sitting down and holding basketballs is not necessarily in the gym at their school.
exists e2 e1 p1 s1 s2 x1 x2 x3.(Theme(e2,x3) & Actor(e2,x2) & v_hold(e2) & n_basketball(x3) & n_kid(x2) & a_several(s2) & Theme(s2,x2) & exists s3.(Theme(s3,x1) & a_down(s3)) & Topic(e1,p1) & Actor(e1,x1) & v_sit(e1) & n_kid(x1) & a_several(s1) & Theme(s1,x1))
exists e1 p1 p2 x1 x2 x3 x4.(n_school(x2) & of(x2,x1) & n_thing(x1) & n_gym(x4) & n_kid(x1) & at(p1,x2) & Topic(e1,p2) & Actor(e1,x3) & v_about(e1) & exists e2.(Actor(e2,x3) & v_play(e2)) & (x2 = x3) & in(x1,x4))