A man on a four-wheeler jumps while in a field.
A man crashes his ATV into a tree.
The man on a four-wheeler jumps while in a field is definitely not the one that crashes his ATV into a tree.
(x)
exists e1 x1 x2 x3.(into(e1,x3) & n_tree(x3) & Theme(e1,x2) & Actor(e1,x1) & v_crash(e1) & ne_org_atv(x2) & of(x2,x1) & n_male(x1) & n_man(x1))