Simplify the following text for a Grade 4 native English-speaking person.
Original: For the same reason , the word senate is correctly used when referring to any powerful authority characteristically composed by the eldest members of a community , as a deliberative body of a faculty in an institution of higher learning is often called a senate . The original senate was the Roman Senate , which lasted until 580 ( various efforts to revive it were made in Medieval Rome ) .
Simplified: The first ever senate was the Roman Senate .