You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.
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Question: Category: DR. WHO... 
Clue: specializes in X-rays & elements, like the one with the atomic number 88 for treating diseases

Answer: a radiologist


Question: Category: JORDAN 
Clue: Jordan lost the city of Jerusalem & the territory known as the West Bank during a war in this year

Answer: 1967


Question: Category: COMPOSERS 
Clue: This Austrian composer wasn't Mozart's father, but Mozart did call him "Papa"

Answer:
franz josef haydn