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Following the release of their debut single " Suicide Alley " , the band was joined by Richey Edwards as co-lyricist and rhythm guitarist .
 person: Richey Edwards
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: Richey Edwards