Complex sentence: Like many spouses of heads of state, the Raja Permaisuri Agong has no constitutional roles, apart from accompanying the Yang di-Pertuan Agong to official functions and state visits, as well as hosting visiting heads of state and their spouses.
Split into simpler sentences: Like many spouses of heads of state, the Raja Permaisuri Agong has no constitutional duties. Her main functions include accompanying the Yang di-Pertuan Agong to official functions and state visits, as well as hosting visiting heads of state and their spouses.