A woman in a gray uniform participates in roller derby.
The woman is good at roller derby.
Simply participating in roller derby doesn't mean that the participant is good or bad at the activity.
exists s1 x1 x2 x3 x4 x5.(a_topic(x1) & in(x1,x2) & in(x2,x4) & n_derby(x4) & of(x4,x5) & n_roller(x5) & n_participate(x2) & of(x2,x3) & n_uniform(x3) & a_gray(s1) & Theme(s1,x2) & n_woman(x1))
exists s1 x1 x2 x3.(n_woman(x1) & at(s1,x2) & n_derby(x2) & of(x2,x3) & n_roller(x3) & Theme(s1,x1) & a_good(s1))