Here is a little boy scuba diving in his own bathtub.
A boy is scuba diving at home.
If a little boy is in his own bathtub, then he is at home.
exists e1 s1 s2 s3 x1 x2 x3 x4.(Theme(s3,x1) & a_here(s3) & in(e1,x4) & n_bathtub(x4) & a_own(s2) & Theme(s2,x4) & of(x4,x1) & n_male(x1) & Actor(e1,x3) & v_dive(e1) & (x1 = x3) & n_scuba(x1) & of(x1,x2) & n_boy(x2) & a_little(s1) & Theme(s1,x1))
exists p1 x1 x2.(at(p1,x2) & n_home(x2) & exists s1 x3.((x1 = x3) & n_diving(x3) & a_scuba(s1) & Theme(s1,x3)) & n_boy(x1))