Children dancing on hardwood flooring.
Adults are dancing on a floor.
children and adulta have different ages
exists x1 x2 x3 x4.(a_topic(x1) & on(x1,x3) & n_flooring(x3) & of(x3,x4) & n_hardwood(x4) & n_dancing(x1) & (x1 = x2) & ne_nam_children(x2))
exists e1 x1 x2.(on(e1,x2) & n_floor(x2) & Actor(e1,x1) & v_dance(e1) & n_adult(x1))