A half naked women is riding a bike.
A woman is competing in a bicycle race.
A women riding a bike does not imply she is competing in a race.
exists e1 s1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_ride(e1) & n_bike(x3) & n_woman(x1) & a_naked(s1) & Theme(s1,x1) & of(x1,x2) & n_half(x2))
exists e1 x1 x2 x3.(in(e1,x2) & n_race(x2) & of(x2,x3) & n_bicycle(x3) & Actor(e1,x1) & v_compete(e1) & n_woman(x1))