Two people are standing in a room one of whom is smoking the shots are of the back of the foreground person.
Two people are standing in a poolhall, playing billiards, while one smokes.
We can gather that one person is smoking. However, we cannot assume the room is a poolhall and that they are playing billiards.
exists e1 e2 p1 s1 x1 x2 x3 x4 x5 x6 x7 x8.(n_person(x8) & a_foreground(s1) & Theme(s1,x8) & n_back(x7) & n_shot(x6) & in(e1,x2) & of(x6,x7) & of(x7,x8) & Theme(e2,x5) & Actor(e2,x3) & v_smoke(e2) & (x2 = x5) & of(x3,x4) & n_whom(x4) & n_thing(x3) & card_eq_1(x3) & n_room(x2) & Actor(e1,x1) & v_stand(e1) & n_people(x1) & card_eq_2(x1))
exists e1 e2 p1 x1 x2 x3.(for(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_play(e2) & n_billiards(x3) & exists e3 x4.(Actor(e3,x4) & v_smoke(e3) & n_thing(x4) & card_eq_1(x4)) & while(e1,p1) & in(e1,x2) & n_poolhall(x2) & Actor(e1,x1) & v_stand(e1) & n_people(x1) & card_eq_2(x1))