Question: Longest and most expensive trial in us history?
Answer: The McMartin preschool trial
Disambiguated annotations:
qaPairs: question: Longest and most expensive trial in us history when the trial ended in 1990?
answer: McMartin preschool trial
question: Longest and most expensive trial in us history when it took place in 1917?
answer: Hindu–German Conspiracy Trial
answer: McMartin preschool trial