Complex sentence: Haggis hurling is a Scottish sport involving the hurling of a haggis as far as possible for distance and accuracy from atop a platform (usually a whisky barrel).
Split into simpler sentences: Haggis hurling is a Scottish sport involving the hurling of a Haggis as far as possible. The sport involves hurling a haggis for distance and accuracy from atop a platform (usually a whisky barrel).