A, E, I, O, and U are sitting in a row facing north. ‘O’ is sitting n…

A, E, I, O, and U are sitting in a row facing north. ‘O’ is sitting next to ‘E’ and ‘U’. ‘A’ is sitting next to ‘I’ who is sitting at the extreme left. ‘U’ is NOT sitting next to ‘A’. Who is in the middle?