Definition: Convert a disfluent question to a proper question. A disfluent question is a question that has some interruptions in it while framing. A proper question is the correct form of the question without any disfluency.
Input: When did Why did Pedro Menendez de Aviles called the St. John River the river of May?

Why did Pedro Menendez de Aviles called the St. John River the river of May?