Two people in blue shirts using a megaphone.
Two people addressing a gathered crowd.
Not all people using a megaphone are addressing a gathered crowd.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x4) & Actor(e1,x3) & v_use(e1) & n_megaphone(x4) & (x1 = x3) & in(x1,x2) & n_shirt(x2) & a_blue(s1) & Theme(s1,x2) & n_people(x1) & card_eq_2(x1))
exists e1 e2 x1 x2 x3.(a_topic(x1) & Theme(e2,x3) & Actor(e2,x2) & v_address(e2) & n_crowd(x3) & Theme(e1,x3) & v_gather(e1) & (x1 = x2) & n_people(x1) & card_eq_2(x1))