Complex sentence: "The switch in time that saved nine" is the name given to what was perceived as the sudden jurisprudential shift by Associate Justice Owen J. Roberts of the U.S. Supreme Court in "West Coast Hotel Co. v. Parrish".
Split into simpler sentences: The switch in time that saved nine is the name which was given to what was conventionally perceived as the sudden jurisprudential shift by Associate Justice Owen J. Roberts. The "switch"came in the case "West Coast Hotel Co. v. Parrish".