A group of people gather in a bar, and one man in a black shirt holds his arm and signals to the camera.
Coal miners going to work.
A group of people are not always coal miners.  One does not go to a bar while simultaneously going to work.
exists e2 e1 s1 x1 x2 x3 x4 x5 x6 x7 x8 x9.(n_camera(x9) & to(e2,x9) & Theme(e2,x6) & Actor(e2,x4) & v_hold(e2) & n_signal(x8) & n_arm(x7) & subset_of(x8,x6) & subset_of(x7,x6) & of(x6,x5) & n_male(x5) & in(x4,x5) & n_shirt(x5) & a_black(s1) & Theme(s1,x5) & n_man(x4) & card_eq_1(x4) & in(e1,x3) & n_bar(x3) & Actor(e1,x1) & v_gather(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 p1 x1 x2 x3.(a_topic(x1) & Topic(e1,p1) & Actor(e1,x3) & v_go(e1) & exists e2.(Actor(e2,x3) & v_work(e2)) & (x1 = x3) & n_miner(x1) & of(x1,x2) & n_coal(x2))