Four girls eat breakfast at a convention.
Four friends are eating at a get together.
Not all girls are friends.  Not all conventions are a get together.
exists e1 x1 x2 x3.(at(e1,x3) & n_convention(x3) & Theme(e1,x2) & Actor(e1,x1) & v_eat(e1) & n_breakfast(x2) & n_girl(x1) & card_eq_4(x1))
exists e1 e2 p1 x1 x2 x3.(exists s1.(Theme(s1,x1) & a_together(s1)) & Topic(e2,p1) & Actor(e2,x1) & v_get(e2) & at(e1,x3) & n_a(x3) & Actor(e1,x2) & v_eat(e1) & (x1 = x2) & n_friend(x1) & card_eq_4(x1))