A backpacker in the mountains using his hiking stick to point at a glacier.
There is a man taking a walk around the city.
The subject cannot be taking a walk around the city and be in the mountains.
exists e1 x1 x2 x3 x4 x5 x6 x7.(n_stick(x4) & of(x4,x5) & n_hiking(x5) & of(x4,x2) & n_male(x2) & n_mountain(x2) & a_topic(x1) & in(x1,x2) & at(e1,x7) & n_glacier(x7) & to(e1,x6) & n_point(x6) & Theme(e1,x4) & Actor(e1,x3) & v_use(e1) & (x2 = x3) & n_backpacker(x1))
exists p1 x1 x5.(n_city(x5) & exists e1 x2 x3 x4.((x1 = x2) & around(e1,x5) & Theme(e1,x4) & Actor(e1,x3) & v_take(e1) & n_walk(x4) & (x2 = x3) & n_man(x2)))