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Several Ambrosian rite Marian texts were intonated , for example the famous Gaude : Marian hymns by Ambrose include the Confractorium from the Christmas liturgy , and in a poetic creation of Saint Ambrose , celebrating the Mother of God : Intende , qui Regis Israel .
 Ambrose, Ambrose
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ambrose, Ambrose