premise: The El Paso Chihuahuas are a minor league baseball team representing El Paso, Texas, in the Pacific Coast League (PCL). They are the Triple-A affiliate for the San Diego Padres. The team plays its home games at Southwest University Park. The Chihuahuas moved to El Paso from Tucson, Arizona, where it was known as the Tucson Padres.
hypothesis: The Tucson Padres were in the Pacific Coast League (PCL).
reason: We know the El Paso Chihuahuas are in the Pacific Coast League, but we are told nothing about what league they were in when the team was in Tucson as the Padres.