Resolves "Yes" if I see evidence that Sean Strickland shows several dementia symptoms. Otherwise resolves "No" if he doesn't meet the criteria when he turns 60.

If he first dies for an unrelated reason, then resolves "N/A" and refunds the trades.

If he is alive but completely vanishes from public view, then I might resolve "N/A" if his health goes unconfirmed after age 55.