The man in the blue looks very tired.
Nobody looks tired.
If nobody looks tired, then the man cannot look tired.
exists s1 s2 x1 x2 x3.(n_look(x2) & a_blue(s1) & Theme(s1,x2) & n_man(x1) & a_topic(x1) & in(x1,x2) & r_very(s2) & Theme(s2,x3) & a_tired(s2) & (x2 = x3))
-exists e1 p1 x1.(exists s1.(Theme(s1,x1) & a_tired(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_look(e1) & n_person(x1))