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In the spring of 839  Louis the German  invaded  Swabia  Pepin II and his Gascon subjects fought all the way to the Loire and the Danes returned to ravage the Frisian coast ( sacking Dorstad for a second time ) .
 cities of residence: Louis the German, Swabia
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
 Entity Pairs:  Louis the German, Swabia 
Answer:
 cities of residence: Louis the German, Swabia