Detailed Instructions: In this task, you are given a context paragraph of the tweet and question. Your task is to generate right answer of given question based on given context tweet paragraph.
Q: Context: #IranDeal @peterbaker I hope as part of this Iran deal the President has worked out a quiet arrangement to free all US citizens Aaron David Miller (@aarondmiller2) July 13, 2015 Question: who played a role in working the deal?
A:
the president