There is a woman riding a bike down the road, and she popped a wheelie.
A woman watches another person ride a bike
There can be either a woman riding a bike or a woman watching another person ride a bike
exists e1 p1 x1 x2 x3 x7.(n_female(x2) & n_road(x7) & Theme(e1,x3) & Actor(e1,x2) & v_pop(e1) & n_wheelie(x3) & exists e2 x4 x5 x6.((x1 = x4) & down(e2,x7) & Theme(e2,x6) & Actor(e2,x5) & v_ride(e2) & n_bike(x6) & (x4 = x5) & n_woman(x4)))
exists e2 e1 x1 x2 x3 x4 x5.(n_person(x3) & Theme(e2,x5) & Actor(e2,x1) & v_ride(e2) & n_bike(x5) & Theme(e1,x4) & Actor(e1,x2) & v_watch(e1) & n_person(x4) & -(x4 = x3) & (x1 = x2) & n_woman(x1))