People walking by an outdoor ice rink with a tree in the center.
There are people skating at rockefeller center.
There are not always people skating at an outdoor ice rink.
exists e1 s1 x1 x2 x3 x4 x5 x6.(n_center(x6) & a_topic(x1) & in(e1,x6) & with(e1,x5) & n_tree(x5) & by(e1,x3) & n_rink(x3) & of(x3,x4) & n_ice(x4) & a_outdoor(s1) & Theme(s1,x3) & Actor(e1,x2) & v_walk(e1) & (x1 = x2) & n_people(x1))
exists p1 x1 e1 x2 x3 x4 x5.((x1 = x2) & at(e1,x4) & n_center(x4) & of(x4,x5) & n_rockefeller(x5) & Actor(e1,x3) & v_skate(e1) & (x2 = x3) & n_people(x2))