A family standing in the snow on a sledding trip.
A family prepares to go home after a sledding trip.
A family out in a sledding trip could be standing in the snow for any number of reasons, not just prepares to go home.
exists x1 x2 x3 x4 x5.(n_snow(x3) & a_topic(x1) & in(x1,x3) & on(x3,x4) & n_trip(x4) & of(x4,x5) & n_sledding(x5) & n_standing(x1) & of(x1,x2) & n_family(x2))
exists e1 p1 x1.(Topic(e1,p1) & Actor(e1,x1) & v_prepare(e1) & exists e2 x2 x3 x4.(after(e2,x3) & n_trip(x3) & of(x3,x4) & n_sledding(x4) & Theme(e2,x2) & Actor(e2,x1) & v_go(e2) & n_home(x2)) & n_family(x1))