260642
Prelude After assuming the imperial throne during the civil war , Otho campaigned to secure the passes in the Alps bordering Gaul , as well as those territories whose loyalties toward him were in doubt .
 Otho
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Otho