I want to know the answer to the following question:
When was the last person executed in the District of Columbia?
All the background I'm provided with is that "Oregon abolished the death penalty through an overwhelming majority in a 1964 public referendum but reinstated it in a 1984 joint death penalty/life imprisonment referendum by an even higher margin after a similar 1978 referendum succeeded but was not implemented due to judicial rulings.". Is that enough to answer the question?