A man standing by a yellow sign.
A person is able to stand.
Standing implies one is able to stand. A person could be a man.
exists s1 x1 x2 x3.(a_topic(x1) & by(x1,x3) & n_sign(x3) & a_yellow(s1) & Theme(s1,x3) & n_standing(x1) & of(x1,x2) & n_man(x2))
exists p1 s1 x1.(Topic(s1,p1) & Actor(s1,x1) & a_able(s1) & exists e1.(Actor(e1,x1) & v_stand(e1)) & n_person(x1))