In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Q: It is an assembly of Islamic clerics who have the power to choose the successor of the Supreme Leader of Iran .
A: 
The Assembly of Experts — also translated as the Assembly of Experts of the Leadership or as the Council of Experts — is the deliberative body empowered to designate and dismiss the Supreme Leader of Iran .