Simplify the following text for a Grade 6 native English-speaking person.
Original: Yet in 1435 he was again in the service of the papal chapel , but this time it was in Florence -- Pope Eugene having been driven from Rome in 1434 by the establishment of an insurrectionary republic there , sympathetic to the Council of Basel and the Conciliar movement .
Simplified: Yet in 1435 he was again in the service of the papal chapel , but this time it was in Florence .