2012
The northernmost edges reach across the international border into Organ Pipe Cactus National Monument and Cabeza Prieta National Wildlife Refuge in southwestern Arizona , United States .
 location: Organ Pipe Cactus National Monument; location: Cabeza Prieta National Wildlife Refuge; location: Arizona; location: United States
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: Organ Pipe Cactus National Monument; location: Cabeza Prieta National Wildlife Refuge; location: Arizona; location: United States