64905
In the commentary to his edition of the poem Y Gododdin , Koch argues that the Gwen Ystrad poem offers a vital clue for an understanding of the sixth-century Battle of Catraeth portrayed in Y Gododdin , in which the Gododdin are said to have suffered a catastrophic defeat .
 person: Koch
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: Koch 
Answer:
 person: Koch