Simplify the following text for a Grade 7 native English-speaking person.
Original: The parliament consisted of 500 representatives -- the Conseil des Cinq-Cents ( Council of the Five Hundred ) -- and 250 senators -- the Conseil des Anciens ( Council of Elders ) .
Simplified: It was called the Conseil de Cinq-Cent , ( Council of Five Hundred ) . The upper house , the senate , had 250 members and it was called the Conseil des Anciens ( Council of Elders ) .