A large group of people come together to proclaim their cause before the cameras.
Protesters gather in front of cameras.
If a large group of people proclaim their cause to cameras, it follows that they are protesters who gather before the cameras.
exists e1 p1 p2 s1 s2 x1 x2 x3 x4 x5 x6.(n_camera(x6) & Topic(e1,p2) & exists e2.(Theme(e2,x5) & Actor(e2,x1) & v_proclaim(e2) & before(x5,x6)) & n_cause(x5) & of(x5,x1) & n_thing(x1) & exists s3.(Theme(s3,x3) & a_together(s3)) & Topic(e1,p1) & Actor(e1,x3) & v_come(e1) & of(x3,x4) & n_people(x4) & n_group(x3) & a_large(s2) & Theme(s2,x3) & of(x1,x2) & n_people(x2) & n_group(x1) & a_large(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(in(e1,x2) & of(x2,x3) & n_camera(x3) & n_front(x2) & Actor(e1,x1) & v_gather(e1) & n_protester(x1))