Complex sentence: Although there is often formal reporting relationship to a head of state, the latter usually acts as a figurehead who may only act as a chief executive, on limited occasions, either when receiving constitutional advice from the head of government or under provisions in a constitution.
Split into simpler sentences: Although there is often formal reporting relationship to a head of state, he normally only acts as a figurehead. He may only act as a chief executive, on limited occasions, either when receiving constitutional advice from the head of government or under provisions in a constitution.