A young man leaps through the air from a rocky mountaintop.
A hiker jumps over a dangerous cavern.
Just because a hike leaps through the air does not necessarily mean it he is jumping over a dangerous cavern.
exists e1 s1 s2 x1 x2 x3.(n_air(x2) & through(e1,x2) & from(x2,x3) & n_mountaintop(x3) & a_rocky(s2) & Theme(s2,x3) & Actor(e1,x1) & v_leap(e1) & n_man(x1) & a_young(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(over(e1,x2) & n_cavern(x2) & a_dangerous(s1) & Theme(s1,x2) & Actor(e1,x1) & v_jump(e1) & n_hiker(x1))