Cement truck on a construction site.
the truck is green
The truck could be another color other than green.
exists x1 x2 x3 x4.(a_topic(x1) & on(x1,x3) & n_site(x3) & of(x3,x4) & n_construction(x4) & n_truck(x1) & (x1 = x2) & ne_nam_cement(x2))
exists s1 x1.(n_truck(x1) & Theme(s1,x1) & a_green(s1))