A girl in a bikini swims underwater in clear water.
A girl swimming.
swims and swimming describe the same activity.
exists e1 s1 x1 x2 x3 x4.(in(e1,x4) & n_water(x4) & a_clear(s1) & Theme(s1,x4) & Theme(e1,x3) & Actor(e1,x1) & v_swim(e1) & n_underwater(x3) & in(x1,x2) & n_bikini(x2) & n_girl(x1))
exists x1 x2.(a_topic(x1) & n_swimming(x1) & of(x1,x2) & n_girl(x2))