A man on a construction site.
Gentleman present on a site where contstruction is underway
A man is a Gentleman and a construction site is a site where construction is underway.
exists x1 x2 x3.(a_topic(x1) & on(x1,x2) & n_site(x2) & of(x2,x3) & n_construction(x3) & n_man(x1))
exists p1 x1 x2 x3.(a_topic(x1) & on(x1,x3) & exists s1 x4.(Theme(s1,x4) & a_underway(s1) & n_contstruction(x4)) & where(x3,p1) & n_site(x3) & n_present(x1) & (x1 = x2) & ne_nam_gentleman(x2))