instruction:
In this task, you're given a context, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both context and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the context or linked information.
question:
Context: Following the success of Sullivan's ballet Victoria and Merrie England in 1897 Link Information: The ballet consists of a series of seven historical vignettes in praise of Britain, such as "Ancient Britain," Christmas in the time of Charles II, and two scenes devoted to Queen Victoria.  Answer: 2
answer:
How many scenes are there in Sullivan's successful ballet performed in 1897?


question:
Context: the Khan of Khiva and the Emir of Bukhara Link Information: none Answer: none
answer:
Which place has the highest recorded population, the place where the Khan came from or the place where the Emir came from?


question:
Context: While working as a biomedical researcher at the National Institute of Mental Health before he was a psychiatrist, Fisher had a psychotic episode including hallucinations and delusions. Link Information: Joshua A. Gordon is the current Director of NIMH. Answer: Joshua A. Gordon
answer:

Who is the current president of the instute where Fisher first had a  had a psychotic episode including hallucinations and delusions while working as a psychiatrist?