Biker with helmet riding a green dirt bike midair.
The person on the dirt bike is doing a jump outside.
Biker riding dirt bike implies they are on the dirt bike.
exists e1 s1 s2 x1 x2 x3 x4 x5.(ne_nam_biker(s1) & a_topic(s1) & with(s1,x1) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_midair(x3) & of(x3,x5) & n_bike(x5) & of(x3,x4) & n_dirt(x4) & a_green(s2) & Theme(s2,x3) & (x1 = x2) & n_helmet(x1))
exists e1 x1 x2 x3 x4 x5.(n_bike(x2) & of(x2,x3) & n_dirt(x3) & n_person(x1) & Theme(e1,x4) & Actor(e1,x1) & v_do(e1) & n_outside(x4) & of(x4,x5) & n_jump(x5) & on(x1,x2))