A man in a gray stocking hat lights a cigarette while holding a pop.
A man lights a cigarette.
A man lights a cigarette is a part of sentence 1.
(x)
all x1.(n_cigarette(x1) -> exists x2 x3.(a_topic(x2) & for(x2,x1) & n_light(x2) & of(x2,x3) & n_man(x3)))