7100
Music written using the modes avoids conventional diatonic harmonic progressions , since for example Messiaen 's Mode 2 ( identical to the " octatonic scale " used also by other composers ) permits precisely the dominant seventh chords whose tonic the mode does not contain .
 person: Messiaen
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:
 person: Messiaen