Three construction workers in bright vests prepare road to be worked on.
The construction workers talked to each other while at work.
Construction workers in bright vests preparing road to be worked on hadn't always talked to each other at work.
exists e1 p1 s1 x1 x2 x3 x4.(Topic(e1,p1) & Recipient(e1,x4) & Actor(e1,x1) & v_prepare(e1) & exists e2 s2.(a_on(s2) & Manner(e2,s2) & Theme(e2,x4) & v_work(e2)) & n_road(x4) & in(x1,x3) & n_vest(x3) & a_bright(s1) & Theme(s1,x3) & n_worker(x1) & of(x1,x2) & n_construction(x2) & card_eq_3(x1))
exists e1 x1 x2 x3.(n_worker(x1) & of(x1,x2) & n_construction(x2) & at(e1,x3) & n_work(x3) & r_while(e1) & all x4.(n_other(x4) -> to(e1,x4)) & Actor(e1,x1) & v_talk(e1))