This helmeted person is doing a stunt on a bicycle outdoors.
There is a woman outside on a bicycle doing backflips.
A helmeted person doing stunts on a bicycle can be a man or a woman. Backflips are not the only stunt that can be performed on a bicycle.
exists e1 s1 x1 x2 x3 x4.(n_person(x1) & a_helmeted(s1) & Theme(s1,x1) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & on(x2,x3) & n_outdoors(x3) & of(x3,x4) & n_bicycle(x4) & n_stunt(x2))
exists p1 x1 e1 x2 x3 x4 x5 x6.((x1 = x2) & Theme(e1,x6) & Actor(e1,x5) & v_do(e1) & n_backflip(x6) & (x2 = x5) & on(x3,x4) & n_bicycle(x4) & outside(x2,x3) & n_thing(x3) & n_woman(x2))