A backpacker in the mountains using his hiking stick to point at a glacier.
There is someone exhausted while hiking taking a break.
A backpacker in the mountains is not necessarily exhausted and not necessarily taking a break.
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 e1 e2 p2 x2 x3.((x1 = x2) & while(e1,e2) & exists e3 x4.(Theme(e3,x4) & Actor(e3,x3) & v_take(e3) & n_break(x4)) & Topic(e2,p2) & Actor(e2,x3) & v_hike(e2) & Theme(e1,x3) & v_exhaust(e1) & (x2 = x3) & n_person(x2))