Four people in hats stand to watch an event, two of them with cameras.
Four people at an event.
people watch an event simply means people at an event
exists e1 p1 x1 x2.(Topic(e1,p1) & Actor(e1,x1) & v_stand(e1) & exists e2 x3 x4 x5.(Theme(e2,x3) & Actor(e2,x1) & v_watch(e2) & rel(x3,x4) & with(x4,x5) & n_camera(x5) & of(x4,x1) & n_thing(x4) & card_eq_2(x4) & n_event(x3)) & n_thing(x1) & in(x1,x2) & n_hat(x2) & n_people(x1) & card_eq_4(x1))
exists x1 x2.(a_topic(x1) & at(x1,x2) & n_event(x2) & n_people(x1) & card_eq_4(x1))