Happy children rocking out and smiling.
Kids are happy.
Rocking out and smiling does not imply they are happy.
exists e1 e2 s1 s2 s3 x1 x2.(Actor(e2,x2) & v_smile(e2) & n_child(x2) & a_happy(s3) & Theme(s3,x2) & a_out(s2) & Manner(e1,s2) & Actor(e1,x1) & v_rock(e1) & n_child(x1) & a_happy(s1) & Theme(s1,x1))
exists s1 x1.(Theme(s1,x1) & a_happy(s1) & n_kid(x1))