A man in black shorts is stretching out his leg.
No one is stretching.
While a man is stretching out his leg it is impossible that no one is stretching.
exists e1 s1 s2 x1 x2 x3.(a_out(s2) & Manner(e1,s2) & Theme(e1,x3) & Actor(e1,x1) & v_stretch(e1) & n_leg(x3) & of(x3,x1) & n_male(x1) & in(x1,x2) & n_shorts(x2) & a_black(s1) & Theme(s1,x2) & n_man(x1))
-exists e1 x1.(Actor(e1,x1) & v_stretch(e1) & n_one(x1))