A family standing in the snow on a sledding trip.
A family rides a ski-lift to the top of a mountain.
A family can not be standing and riding a ski-lift simultaneously.
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 x1 x2 x3 x4.(n_top(x3) & to(e1,x3) & of(x3,x4) & n_mountain(x4) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_ski-lift(x2) & n_family(x1))