Simplify the following text for a Grade 7 native English-speaking person.
Original: Seanad Ã ireann is the upper house of the Oireachtas ( Irish parliament ) , which also comprises the President of Ireland and DÃ il Ã ireann ( the lower house ) .
Simplified: Seanad Ã ireann is the second house of the Irish parliament , the Oireachtas .