Two people are standing in a room one of whom is smoking the shots are of the back of the foreground person.
The room has white walls.
We cannot assume that the color of the walls are white. That information is not specified.
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 s1 x1 x2.(n_room(x1) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_wall(x2) & a_white(s1) & Theme(s1,x2))