A man standing by a yellow sign.
There is a man standing by the yellow sign.
man standing by a yellow sign is just the same as man standing by the yellow sign
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 x4.(n_sign(x4) & a_yellow(s1) & Theme(s1,x4) & exists x2 x3.((x1 = x2) & by(x2,x4) & n_standing(x2) & of(x2,x3) & n_man(x3)))