Eight people wearing red suits and carrying red bags are walking across a bridge.
A group of persons traverse across the bridge.
Eight people is a form of a group, and walking is synonym of traverse.
exists e3 e1 e2 s1 s2 x1 x2 x3 x4 x5 x6.(across(e3,x6) & n_bridge(x6) & Actor(e3,x1) & v_walk(e3) & Theme(e2,x5) & Actor(e2,x4) & v_carry(e2) & n_bag(x5) & a_red(s2) & Theme(s2,x5) & (x1 = x4) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_suit(x3) & a_red(s1) & Theme(s1,x3) & (x1 = x2) & n_people(x1) & card_eq_8(x1))
exists x1 x2 x3 x4.(n_bridge(x4) & a_topic(x1) & across(x1,x4) & of(x1,x2) & n_traverse(x2) & of(x2,x3) & n_person(x3) & n_group(x1))