A woman is riding her bicycle.
The woman was roller blading to work today.
If she is roller blading, she cannot be riding her bicycle.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bicycle(x2) & of(x2,x1) & n_female(x1) & n_woman(x1))
exists e1 p1 x1 x2.(n_woman(x1) & Time(e1,x2) & n_roller(x2) & Topic(e1,p1) & Actor(e1,x1) & v_blade(e1) & exists e2 x3.(Time(e2,x3) & n_today(x3) & Actor(e2,x1) & v_work(e2)))