Simplify the following text for a Grade 4 native English-speaking person.
Original: ` Abdu ` l-Bah Ã had shared his father 's long exile and imprisonment , which continued until ` Abdu ` l-Bah Ã 's own release as a result of the Young Turk Revolution in 1908 .
Simplified: After he died , people followed ` Abdu ` l-Bah Ã .