A woman in a gray uniform participates in roller derby.
The woman is wearing roller skates.
If the woman is participating in a roller derby, it stands to reason she is wearing roller skates.
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 e1 x1 x2 x3.(n_woman(x1) & Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_skate(x2) & of(x2,x3) & n_roller(x3))