A biker does a trick on a ramp.
A biker does a trick.
Trick on a ramp is a type of trick.
exists e1 x1 x2 x3.(on(e1,x3) & n_ramp(x3) & Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_trick(x2) & n_biker(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_trick(x2) & n_biker(x1))