Men in orange vests and hard hats.
A group of men dressed up for Halloween.
A group does not have consist of men.  Men in orange vests and hard hats do not have to be dressed up for halloween.
exists s1 x1 x2 x3 x4 x5.(a_topic(x1) & in(x1,x2) & n_hat(x5) & a_hard(s1) & Theme(s1,x5) & n_vest(x4) & subset_of(x5,x2) & subset_of(x4,x2) & of(x2,x3) & n_orange(x3) & n_man(x1))
exists e1 s1 x1 x2 x3 x4.(ne_geo_halloween(x4) & a_topic(x1) & of(x1,x2) & a_up(s1) & Manner(e1,s1) & for(e1,x4) & Theme(e1,x3) & v_dress(e1) & (x2 = x3) & n_man(x2) & n_group(x1))