A man working on a job site.
A man building his house.
Working on a job site does not tell us he's building his house.
exists e1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x3) & n_site(x3) & of(x3,x4) & n_job(x4) & Actor(e1,x2) & v_work(e1) & (x1 = x2) & n_man(x1))
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_build(e1) & n_house(x3) & of(x3,x1) & n_male(x1) & (x1 = x2) & n_man(x1))