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To promote the album , the band - with Keri Kelli on rhythm guitar - embarked on an extensive world tour in support of AC / DC in the summer of 2000 , followed by their own headlining theater tour .
 person: Keri Kelli; organization: AC / DC
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 person: Keri Kelli; organization: AC / DC