240320
Origin of the flocks The specific origin of the birds is not known , but they most likely came from a single pair of breeding parakeets which escaped or were released in the mid-1990s .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities:  
Answer:
 None