when did covent garden market move to nine elms???

Answer: 11 November 1974
Question: the signs and symptoms of include dermatitis dementia diarrhea?

Answer: pellagra
Answer this question: who played harmonica on nobody's fault but mine??

Robert Plant
Q: when was the immigration reform and control act passed?A: November 6, 1986
Input: who wrote it don't mean a thing?

Output: composition by Duke Ellington
when did supply side economic policies begin to grow in popularity???

Answer:
the Ronald Reagan administration