A boy is covered in bubbles.
There are bubbles on the boy.
If the boy is covered in bubbles the bubbles are on his skin and clothing.
exists e1 x1 x2.(in(e1,x2) & n_bubble(x2) & Theme(e1,x1) & v_cover(e1) & n_boy(x1))
exists p1 x1 x3.(n_boy(x3) & exists x2.((x1 = x2) & on(x2,x3) & n_bubble(x2)))