Snowboarder jumps off rail over snowpile.
A snowboarder is stunting incorrectly.
Just because a snowboarder jumps off rail over snowpile doesn't mean they are stunting incorrectly.
exists e1 s1 x1 x2 x3.(ne_nam_snowboarder(x1) & a_off(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_jump(e1) & over(x2,x3) & n_snowpile(x3) & n_rail(x2))
exists e1 s1 x1.(a_incorrectly(s1) & Manner(e1,s1) & Actor(e1,x1) & v_stunt(e1) & n_snowboarder(x1))