A girl is riding a bike and everyone is rushing by her in the city.
The girl is happy.
Just because she is happy does not mean it is because she is riding a bike.
exists e1 x1 x2 x4.(n_city(x4) & all x3.(n_person(x3) -> exists e2.(in(e2,x4) & by(e2,x1) & Actor(e2,x3) & v_rush(e2))) & n_female(x1) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bike(x2) & n_girl(x1))
exists s1 x1.(n_girl(x1) & Theme(s1,x1) & a_happy(s1))