These are construction workers with orange safety vests working on in a British Underground.
The British Underground is being worked on by construction workers.
The British Underground is being worked on by construction workers is a rephrasing of These are construction workers on in a British Underground.
exists e1 p1 s1 s2 x1.(for(p1,e1) & in(e1,x1) & n_underground(x1) & a_british(s2) & Theme(s2,x1) & a_on(s1) & Manner(e1,s1) & Actor(e1,x1) & v_work(e1) & exists x2 x3 x4 x5 x6.((x1 = x2) & with(x2,x4) & n_vest(x4) & of(x4,x6) & n_safety(x6) & of(x4,x5) & n_orange(x5) & n_worker(x2) & of(x2,x3) & n_construction(x3)) & n_thing(x1))
exists e1 s1 s2 x1 x2 x3.(n_underground(x1) & a_british(s1) & Theme(s1,x1) & Actor(e1,x2) & n_worker(x2) & of(x2,x3) & n_construction(x3) & a_on(s2) & Manner(e1,s2) & Theme(e1,x1) & v_work(e1))