(1) General rule. For purposes of this chapter, the term 'taxable termination' means the termination (by death, lapse of time, release of power, or otherwise) of an interest in property held in a trust unless--
(A) immediately after such termination, a non-skip person has an interest in such property, or
(B) at no time after such termination may a distribution (including distributions on termination) be made from such trust to a skip person.
(2) Certain partial terminations treated as taxable. If, upon the termination of an interest in property held in trust by reason of the death of a lineal descendant of the transferor, a specified portion of the trust's assets are distributed to 1 or more skip persons (or 1 or more trusts for the exclusive benefit of such persons), such termination shall constitute a taxable termination with respect to such portion of the trust property.