Two men in white shirts with suspenders, blue neckties, and gray hats, stand to the side as people walk by.
The men are security guards.
Two men who stand to the side as people walk by are not necessarily security guards.
exists e2 e1 s1 s2 s3 s4 x1 x2 x3 x4 x5 x6 x7 x8 x9.(n_side(x9) & to(e1,x9) & as(e1,x7) & a_by(s4) & Manner(e2,s4) & Theme(e2,x8) & v_walk(e2) & (x7 = x8) & n_people(x7) & Actor(e1,x1) & v_stand(e1) & subset_of(x6,x1) & n_hat(x6) & a_gray(s3) & Theme(s3,x6) & subset_of(x2,x1) & with(x2,x4) & rel(x4,x5) & n_necktie(x5) & a_blue(s2) & Theme(s2,x5) & n_suspenders(x4) & in(x2,x3) & n_shirt(x3) & a_white(s1) & Theme(s1,x3) & n_man(x2) & card_eq_2(x2))
exists p1 x1.(n_man(x1) & exists x2 x3.((x1 = x2) & n_guard(x2) & of(x2,x3) & n_security(x3)))