Simplify the following text for a Grade 11 native English-speaking person.
Original: The majority of adult football and all minor and under-21 matches last for 60 minutes , divided into two halves of 30 minutes , with the exception of senior inter-county games which last for 70 minutes ( two halves of 35 minutes ) .
Simplified: All Gaelic football matches last for 60 minutes , divided into two halves of thirty minutes , with the exception of senior inter-county games which last for 70 minutes ( two halves of 35 minutes ) .