A person wearing a white shirt is hunched over a gravestone.
A man cries at his wifes grave.
Not all person hunched over a gravestone is crying over his wifes grave.
exists e1 e2 s1 x1 x2 x3 x4.(over(e2,x4) & n_gravestone(x4) & Theme(e2,x1) & v_hunch(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_shirt(x3) & a_white(s1) & Theme(s1,x3) & (x1 = x2) & n_person(x1))
exists e1 x1 x2 x3.(at(e1,x2) & n_grave(x2) & of(x2,x3) & n_wife(x3) & of(x2,x1) & n_male(x1) & Actor(e1,x1) & v_cry(e1) & n_man(x1))