Three men in safety vests work along a roadside.
Some men are working outside.
if they are working roadside, they are outside
exists e1 x1 x2 x3 x4.(along(e1,x4) & n_roadside(x4) & Actor(e1,x1) & v_work(e1) & in(x1,x2) & n_vest(x2) & of(x2,x3) & n_safety(x3) & n_man(x1) & card_eq_3(x1))
exists e1 s1 x1.(a_outside(s1) & Manner(e1,s1) & Actor(e1,x1) & v_work(e1) & n_man(x1))