Complex sentence: The Accord declared that forestry, mining, natural resources, and cultural policy would become provincial jurisdictions, with the federal government retaining jurisdiction over national cultural bodies such as the Canadian Broadcasting Corporation and the National Film Board.
Split into simpler sentences: The Accord declared that forestry, mining, natural resources, and cultural policy would become provincial. The federal government, however, would have retained jurisdiction over national cultural bodies such as the Canadian Broadcasting Corporation and the National Film Board.