A man in playing the guitar with a glare of the sun in the background.
A man is in front of a window.
Sentence one never infers that the man is in front of a window.
exists e1 x1 x2 x3 x4 x5 x6.(n_background(x6) & n_sun(x5) & n_guitar(x3) & a_topic(x1) & in(e1,x6) & with(e1,x4) & of(x4,x5) & n_glare(x4) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_man(x1))
exists p1 x1.(exists x2 x3.(in(x1,x2) & of(x2,x3) & n_window(x3) & n_front(x2)) & n_man(x1))