A group of workers working on a metal framework similar to scaffolding.
A group of workers work on their tans.
The group of workers can't be working on their tans if they are working on a metal framework.
exists e1 s1 x1 x2 x3 x4 x5 x6 x7.(a_topic(x1) & on(e1,x4) & to(s1,x7) & n_scaffolding(x7) & Theme(s1,x6) & a_similar(s1) & (x4 = x6) & n_framework(x4) & of(x4,x5) & n_metal(x5) & Actor(e1,x3) & v_work(e1) & (x1 = x3) & of(x1,x2) & n_worker(x2) & n_group(x1))
exists e1 x1 x2 x3.(on(e1,x3) & n_tan(x3) & of(x3,x1) & n_thing(x1) & Actor(e1,x1) & v_work(e1) & of(x1,x2) & n_worker(x2) & n_group(x1))