A small boy swimming underwater
The small boy scuba dived in the ocean.
Just because the boy is underwater does not mean the boy scuba dived.
exists s1 x1 x2 x3.(a_topic(x1) & n_underwater(x1) & of(x1,x3) & n_swimming(x3) & of(x1,x2) & n_boy(x2) & a_small(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3 x4.(n_ocean(x4) & n_scuba(x1) & of(x1,x2) & n_boy(x2) & a_small(s1) & Theme(s1,x1) & a_topic(x1) & in(e1,x4) & Theme(e1,x3) & v_dive(e1) & (x1 = x3))