 From the Center for Investigative Reporting and PRX, this is Reveal. I'm Al Edson. This is the final episode of our three-part series, 40 Acres and a Lie. And we're ending on a topic that has come up many times throughout the series, reparations and the question of what's owed. Because that's what 40 Acres and a Mule has come to symbolize, an unpaid debt.