People ice skating on a frozen pond.
People skate in the winter.
In a both sentence, people are ice skating.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x4) & n_pond(x4) & a_frozen(s1) & Theme(s1,x4) & Actor(e1,x3) & v_skate(e1) & (x1 = x3) & n_ice(x1) & of(x1,x2) & n_people(x2))
exists e1 x1 x2.(n_winter(x2) & in(e1,x2) & Actor(e1,x1) & v_skate(e1) & n_people(x1))