A man is racing in a swimming pool.
A man was doing laps in the swimming pool.
Just because the man in the pool was going laps does not mean he was was racing.
exists e1 x1 x2 x3.(in(e1,x2) & n_pool(x2) & of(x2,x3) & n_swimming(x3) & Actor(e1,x1) & v_race(e1) & n_man(x1))
exists e1 x1 x2 x3 x4.(n_pool(x3) & of(x3,x4) & n_swimming(x4) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_lap(x2) & n_man(x1))