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In his next full match after his injury , he scored twice against Chievo at the San Siro , returning to his position as a striker in a 4 – 3 – 1 – 2 formation .
 Chievo, San Siro
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Chievo, San Siro