A crowd of people is walking along a promenade under signs that say "hub".
The crowd is a group of tourists
We cannot assume that a crowd of people is a group of tourists.
exists e1 e2 x1 x2 x3 x4 x5 x6.(under(e1,x4) & Theme(e2,x6) & Actor(e2,x5) & v_say(e2) & n_hub(x6) & (x4 = x5) & n_sign(x4) & along(e1,x3) & n_promenade(x3) & Actor(e1,x1) & v_walk(e1) & of(x1,x2) & n_people(x2) & n_crowd(x1))
exists p1 x1.(n_crowd(x1) & exists x2 x3.((x1 = x2) & of(x2,x3) & n_tourist(x3) & n_group(x2)))