A man outside of a mobile lunch van.
The lunch van is open for business.
We have no idea if the van is open for business, it could be closed right then.
exists s1 x1 x2 x3 x4.(a_topic(x1) & of(x2,x3) & n_van(x3) & of(x3,x4) & n_lunch(x4) & a_mobile(s1) & Theme(s1,x3) & outside(x1,x2) & n_thing(x2) & n_man(x1))
exists s1 x1 x2 x3.(n_van(x1) & of(x1,x2) & n_lunch(x2) & for(s1,x3) & n_business(x3) & Theme(s1,x1) & a_open(s1))