Flags with men in yellow vests in front of them.
The men are workers.
We don't know that the men are workers.
exists s1 x1 x2 x3 x4.(a_topic(x1) & with(x1,x2) & in(x2,x3) & in(x3,x4) & of(x4,x1) & n_thing(x1) & n_front(x4) & n_vest(x3) & a_yellow(s1) & Theme(s1,x3) & n_man(x2) & n_flag(x1))
exists p1 x1.(n_man(x1) & exists x2.((x1 = x2) & n_worker(x2)))