Resolves N/A if either Ryan or Rhonda don't die of natural causes.

The intent of the question is to ask which of these two people will live longer assuming they die of natural causes.

There are a few gray areas. I'll deal with some. Euthanasia will count as a natural death as long as it isn't preceded by an accident. In effect, I'll look at the cause directly preceding euthanasia. If someone dies of some preservation technique, again I'll look at the cause directly preceding that event. Any other such events will similarly resolve by looking at the previous causes. In this way, I'm hoping that accidents are the main way this question might resolve N/A.