Two girls are doing karate together, while others are walking in the background.
The two girls are friends.
Not all girls are friends.
exists e1 p1 s1 s2 x1 x3.(n_background(x3) & exists e2 x2.(in(e2,x3) & Actor(e2,x2) & v_walk(e2) & -(x2 = x1) & n_person(x2)) & n_person(x1) & while(e1,p1) & a_together(s2) & Manner(e1,s2) & a_karate(s1) & Manner(e1,s1) & Actor(e1,x1) & v_do(e1) & n_girl(x1) & card_eq_2(x1))
exists p1 x1.(n_girl(x1) & card_eq_2(x1) & exists x2.((x1 = x2) & n_friend(x2)))