6524
After a series of extraordinary adventures through war-torn Latvia under a variety of disguises , he got back to London with his secret documents copied onto tissue paper .
 location: Latvia; location: London
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: Latvia; location: London