Complex sentence: On Christmas Eve 1994, Harv is poking at his fireplace when a spark ignites the rifle shooting the neighbor boy through the window named Richard, as he attempts to fix a light on his Christmas tree.
Split into simpler sentences: On Christmas Eve 1994, Harv is poking at his fireplace when a spark ignites the rifle, causing it to go off. The bullet goes through the window and hits the neighbor boy, Richard, as he attempts to fix a light on his Christmas tree.