A girl in vibrant colors is walking her bike in a dark area.
A girl is not riding her bike.
A girl could be in vibrant colors.  Not riding could mean walking.
exists e1 s1 s2 x1 x2 x3 x4.(in(e1,x4) & n_area(x4) & a_dark(s2) & Theme(s2,x4) & Theme(e1,x3) & Actor(e1,x1) & v_walk(e1) & n_bike(x3) & of(x3,x1) & n_female(x1) & in(x1,x2) & n_color(x2) & a_vibrant(s1) & Theme(s1,x2) & n_girl(x1))
exists x1 x2.(-exists e1.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1)) & n_bike(x2) & of(x2,x1) & n_female(x1) & n_girl(x1))