Task: Explanation
Input (English): The 2017 NHL Entry Draft was the 55th NHL Entry Draft. The draft was held from June 23–24, 2017, at the United Center in Chicago, Illinois. The first three selections were Nico Hischier, Nolan Patrick and Miro Heiskanen. Question: What was held at the United Center in Chicago, Illinois on June 23-24, 2017 and resulted in Sebastian Aho playing under contract as a prospect of the New York Islanders? Answer: 2017 NHL Entry Draft
Output (English):  The draft was held from June 23–24, 2017, at the United Center in Chicago, Illinois.