2973
The " Anglo-Saxon Chronicle " is the other main source that bears on this period , in particular in an entry for the year 827 that records a list of the kings who bore the title " " bretwalda " " , or " Britain-ruler " .
 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