2668
Beaver dams are created as a protection against predators , such as coyotes ( North America ) , wolves and bears , and to provide easy access to food during winter .
 location: North America
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: North America