Children smiling and waving at camera
There are children present
The children must be present to see them smiling and waving.
exists e2 e1 x1 x2.(ne_nam_children(x1) & at(e2,x2) & n_camera(x2) & Actor(e2,x1) & v_wave(e2) & Actor(e1,x1) & v_smile(e1))
exists p1 x1 s1 x2 x3.((x1 = x2) & Theme(s1,x3) & a_present(s1) & (x2 = x3) & n_child(x2))