Two men in safety vests work on a project outdoors.
Men are working in an office
Men cannot be outdoor while in an office simultaneously.
exists e1 x1 x2 x3 x4 x5.(on(e1,x4) & n_outdoors(x4) & of(x4,x5) & n_project(x5) & Actor(e1,x1) & v_work(e1) & in(x1,x2) & n_vest(x2) & of(x2,x3) & n_safety(x3) & n_man(x1) & card_eq_2(x1))
exists e1 x1 x2.(in(e1,x2) & n_office(x2) & Actor(e1,x1) & v_work(e1) & n_man(x1))