Complex sentence: The town is known in Poland for an oil gusher at a nearby exploration oil well, which erupted and caught fire on December 9,1980 and burned until January 14,1981 when it was finally put out, after dominating the news for weeks.
Split into simpler sentences: The town is known in Poland for an oil gusher at a nearby exploration oil well, which erupted and caught fire on December 9,1980. It burned until January 14,1981 when it was finally put out, after dominating the news for weeks.