Complex sentence: London North Centre (formerly known as London--Adelaide) is an electoral district in the province of Ontario, Canada, that has been represented in the Canadian House of Commons since 1997, and in the Legislative Assembly of Ontario since 1951.
Split into simpler sentences: London North Centre (formerly known as London--Adelaide) is a federal electoral district in the province of Ontario, Canada, that has been represented in the Canadian House of Commons since 1997. It is also a provincial electoral district that has been represented in the Legislative Assembly of Ontario since 1951.