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Celine Dion , Andrea Bocelli , Lady Gaga , Lang Lang , John Legend perform ".. . {{URL}} {@YouTube@}
 person: Celine Dion; person: Andrea Bocelli; person: Lady Gaga; person: Lang Lang; person: John Legend; product: YouTube
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: group, creative work, person, event, product, location, corporation 
Text: {0} 
Answer:
 person: Celine Dion; person: Andrea Bocelli; person: Lady Gaga; person: Lang Lang; person: John Legend; product: YouTube