A group of children sitting down and holding basketballs on their laps.
The kids were playing soccer.
They cannot be playing soccer if they are sitting down.
exists e1 e2 s1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & on(e2,x6) & n_lap(x6) & of(x6,x1) & n_thing(x1) & Theme(e2,x5) & Actor(e2,x4) & v_hold(e2) & n_basketball(x5) & (x1 = x4) & a_down(s1) & Manner(e1,s1) & Actor(e1,x3) & v_sit(e1) & (x1 = x3) & of(x1,x2) & n_child(x2) & n_group(x1))
exists e1 x1 x2.(n_kid(x1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_soccer(x2))