people pass by a huge black and white poster of a male model unzipping his jeans.
man pass by the girl poster.
Just because  people pass by a huge black and white poster of a male model unzipping his jeans does not mean a man passes by a poster with a girl.
exists e1 e2 s1 s2 s3 s4 x1 x2 x3 x4 x5.(by(e1,x2) & of(x2,x3) & Theme(e2,x5) & Actor(e2,x4) & v_unzip(e2) & n_jeans(x5) & of(x5,x1) & n_male(x1) & (x3 = x4) & n_model(x3) & a_male(s4) & Theme(s4,x3) & n_poster(x2) & a_white(s3) & Theme(s3,x2) & a_black(s2) & Theme(s2,x2) & a_huge(s1) & Theme(s1,x2) & Actor(e1,x1) & v_pass(e1) & n_people(x1))
exists x1 x2 x3 x4.(n_poster(x3) & of(x3,x4) & n_girl(x4) & a_topic(x1) & by(x1,x3) & n_pass(x1) & of(x1,x2) & n_man(x2))