Four people standing near signs reading them.
Four men are standing.
Just because four people standing near signs reading them does not imply that men are standing.
exists e1 e2 x1 x2 x3 x4.(a_topic(x1) & near(e1,x3) & Theme(e2,x1) & Actor(e2,x4) & v_read(e2) & n_thing(x1) & (x3 = x4) & n_sign(x3) & Actor(e1,x2) & v_stand(e1) & (x1 = x2) & n_people(x1) & card_eq_4(x1))
exists e1 x1.(Actor(e1,x1) & v_stand(e1) & n_man(x1) & card_eq_4(x1))