Bystanders watch as a female balance-beam gymnast performs.
the female is on a motorcycle
A gymnast performing would not be on a motorcycle.
exists e1 p1 x1 x2.(exists e2 s1 x3 x4.(Actor(e2,x3) & v_perform(e2) & n_gymnast(x3) & of(x3,x4) & n_balance-beam(x4) & a_female(s1) & Theme(s1,x3)) & as(e1,p1) & Theme(e1,x2) & Actor(e1,x1) & v_watch(e1) & n_thing(x2) & n_bystander(x1))
exists p1 x1.(n_female(x1) & exists x2.(on(x1,x2) & n_motorcycle(x2)))