Complex sentence: The Pasadena Freeway or Arroyo Seco Parkway is the first freeway in the U.S. state of California, connecting Los Angeles with Pasadena alongside the Arroyo Seco.
Split into simpler sentences: The Pasadena Freeway or Arroyo Seco Parkway is the first freeway in the U.S. state of California. It connects Los Angeles with Pasadena alongside the Arroyo Seco.