Several children are playing outside with a wet tarp on the ground.
Kids playing outside.
Several children are kids, and ground implies outside.
exists e1 s1 s2 x1 x2 x3.(n_ground(x3) & on(e1,x3) & with(e1,x2) & n_tarp(x2) & a_wet(s2) & Theme(s2,x2) & r_outside(e1) & Actor(e1,x1) & v_play(e1) & n_child(x1) & a_several(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & n_outside(x3) & (x1 = x2) & n_kid(x1))