A man wearing glasses is staring off into space.
A man is thinking about his wife.
Staring does not imply thinking about his wife.
exists e1 e2 s1 x1 x2 x3 x4.(a_off(s1) & Manner(e2,s1) & into(e2,x4) & n_space(x4) & Actor(e2,x1) & v_stare(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_glass(x3) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(about(e1,x2) & n_wife(x2) & of(x2,x1) & n_male(x1) & Actor(e1,x1) & v_think(e1) & n_man(x1))