There are construction workers working hard on a project.
Men do a lot of heavy construction tasks.
Not all construction workers are men and not all projects are heavy.
exists p1 x1 e1 s1 x2 x3 x4 x5.((x1 = x2) & on(e1,x5) & n_project(x5) & a_hard(s1) & Manner(e1,s1) & Actor(e1,x4) & v_work(e1) & (x2 = x4) & n_worker(x2) & of(x2,x3) & n_construction(x3))
exists e1 s1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & of(x2,x3) & n_task(x3) & of(x3,x4) & n_construction(x4) & a_heavy(s1) & Theme(s1,x3) & n_lot(x2) & n_man(x1))