Young girl wearing two piece black bathing suit running in the water with a smile on her face.
She is happy because she enjoys spending time with her friends.
A smile does not necessarily mean someone is happy.  Not all girls are enjoying spending time with their friends.
exists e1 e2 s1 s2 x1 x2 x3 x4 x5 x6 x7.(n_face(x7) & of(x7,x5) & n_female(x5) & n_water(x5) & with(e2,x6) & on(x6,x7) & n_smile(x6) & in(e2,x5) & Actor(e2,x1) & v_run(e2) & n_suit(x1) & of(x1,x4) & n_bathing(x4) & a_black(s2) & Theme(s2,x1) & of(x1,x3) & n_piece(x3) & card_eq_2(x1) & Actor(e1,x1) & v_wear(e1) & of(x1,x2) & n_girl(x2) & a_young(s1) & Theme(s1,x1))
exists p1 s1 x1 x3.(n_friend(x3) & of(x3,x1) & n_female(x1) & n_female(x1) & n_female(x1) & exists e1 p2.(exists e2 x2.(with(e2,x3) & Theme(e2,x2) & Actor(e2,x1) & v_spend(e2) & n_time(x2)) & Topic(e1,p2) & Actor(e1,x1) & v_enjoy(e1)) & because(s1,p1) & Theme(s1,x1) & a_happy(s1))