A biker makes a high jump.
The biker makes a jump.
A biker makes would mean attempting a jump, while the biker makes the jump attemted.
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_make(e1) & n_jump(x2) & a_high(s1) & Theme(s1,x2) & n_biker(x1))
exists e1 x1 x2.(n_biker(x1) & Theme(e1,x2) & Actor(e1,x1) & v_make(e1) & n_jump(x2))