Complex sentence: New York State Route 239 was a short north-south thoroughfare in Alden, a village in Erie County, which began at New York State Route 354 and terminated at U.S. Route 20.
Split into simpler sentences: New York State Route 239 was a short north-south thoroughfare in Alden, a village in Erie County. The route began at New York State Route 354 and terminated at U.S. Route 20.