Simplify the following text for a Grade 5 native English-speaking person.
Original: Then the blue Ulong ( Jolanda 's team ; made up of young players ) and the brown Koror ( Ian 's team ; where half of the team are above 35 ) tribes were made .
Simplified: Then the blue Ulong ( Jolanda 's team ) and the brown Koror ( Ian 's team ) tribes were born .