a man in a black shirt has his back towards a woman.
A man in a black shirt looks away from a woman due to embarrassment.
Sentence one says the man has his back towards woman but does not infer that he looks away due to embarrassment.
exists e1 s1 x1 x2 x3 x4.(Theme(e1,x3) & Actor(e1,x1) & v_have(e1) & towards(x3,x4) & n_woman(x4) & n_back(x3) & of(x3,x1) & n_male(x1) & in(x1,x2) & n_shirt(x2) & a_black(s1) & Theme(s1,x2) & n_man(x1))
exists e1 s1 s2 x1 x2 x3 x4 x5.(from(e1,x4) & Theme(s2,x5) & a_due(s2) & (x4 = x5) & n_woman(x4) & r_away(e1) & to(e1,x3) & n_embarrassment(x3) & Actor(e1,x1) & v_look(e1) & in(x1,x2) & n_shirt(x2) & a_black(s1) & Theme(s1,x2) & n_man(x1))