A female swimmer is practicing her stroke in a pool.
A slender human swimming.
That the person is a female swimmer does not necessarily mean she is slender.
exists e1 s1 x1 x2 x3.(in(e1,x3) & n_pool(x3) & Theme(e1,x2) & Actor(e1,x1) & v_practice(e1) & n_stroke(x2) & of(x2,x1) & n_female(x1) & n_swimmer(x1) & a_female(s1) & Theme(s1,x1))
exists s1 x1 x2.(a_topic(x1) & n_swimming(x1) & a_human(s1) & Theme(s1,x1) & of(x1,x2) & n_slender(x2))