Men working on a photo shoot.
Men are hard at work.
Men who are hard at work must be working.
exists e1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x3) & n_shoot(x3) & of(x3,x4) & n_photo(x4) & Actor(e1,x2) & v_work(e1) & (x1 = x2) & n_man(x1))
exists s1 x1 x2.(at(s1,x2) & n_work(x2) & Theme(s1,x1) & a_hard(s1) & n_man(x1))