Kids playing in a tub of plastic balls.
There are children are playing.
Kids can also be referred to as children more broadly.
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & in(e1,x3) & of(x3,x4) & n_ball(x4) & of(x4,x5) & n_plastic(x5) & n_tub(x3) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_kid(x1))
exists p1 x1 e1 x2 x3.((x1 = x2) & Actor(e1,x3) & v_play(e1) & (x2 = x3) & n_child(x2))