Complex sentence: The Sprague Fire is in Glacier National Park in the U.S. state of Montana and was first reported on August 10,2017 around 8:30pm after it was caused by a lightning storm.
Split into simpler sentences: The Sprague Fire is a wildfire burning in Glacier National Park in the U.S. state of Montana. It was first reported on August 10,2017 around 8:30pm after it was caused by a lightning storm.