Two young men with shaggy hair are waiting outside, wearing warm clothes and backpacks.
The two young men are outdoors in their warming clothing.
Outside and outdoors are interpreted as being out in the elements with out any shelter, therefore both sentences talk about men who are out in the elements with out shelter.
exists e2 e1 s1 s2 s3 s4 x1 x2 x3 x4 x5.(for(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_wear(e2) & subset_of(x5,x3) & n_backpack(x5) & subset_of(x4,x3) & n_clothes(x4) & a_warm(s4) & Theme(s4,x4) & a_outside(s3) & Manner(e1,s3) & Actor(e1,x1) & v_wait(e1) & with(x1,x2) & n_hair(x2) & a_shaggy(s2) & Theme(s2,x2) & n_man(x1) & a_young(s1) & Theme(s1,x1) & card_eq_2(x1))
exists p1 s1 x1 x2 x3.(n_clothing(x2) & of(x2,x3) & n_warming(x3) & of(x2,x1) & n_thing(x1) & n_man(x1) & a_young(s1) & Theme(s1,x1) & card_eq_2(x1) & in(p1,x2) & exists x4.((x1 = x4) & n_outdoors(x4)))