Two construction workers working on infrastructure, while one worker takes a break.
The three workers are building a skyscraper.
The infrastructure may not be a skyscraper.
exists e1 p1 x1 x2 x3.(exists e2 x4 x5.(Theme(e2,x5) & Actor(e2,x4) & v_take(e2) & n_break(x5) & n_worker(x4) & card_eq_1(x4)) & while(e1,p1) & on(e1,x3) & n_infrastructure(x3) & Actor(e1,x1) & v_work(e1) & n_worker(x1) & of(x1,x2) & n_construction(x2) & card_eq_2(x1))
exists e1 x1 x2.(n_worker(x1) & card_eq_3(x1) & Theme(e1,x2) & Actor(e1,x1) & v_build(e1) & n_skyscraper(x2))