A BMX biker is in the air completing a trick with only one foot on the pedals.
The biker is riding a horse.
A horse isn't a bike.
exists p1 x1 x2 x3 x7.(n_pedal(x7) & n_air(x3) & exists e1 x4 x5 x6.(in(x1,x3) & Theme(e1,x5) & Actor(e1,x4) & v_complete(e1) & with(x5,x6) & on(x6,x7) & n_foot(x6) & card_eq_1(x6) & r_only(x6) & n_trick(x5) & (x3 = x4)) & n_biker(x1) & (x1 = x2) & ne_org_bmx(x2))
exists e1 x1 x2.(n_biker(x1) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_horse(x2))