190449
The Wick rotation , Wick contraction , Wick 's theorem , and the Wick product are named after him .
 Wick, Wick, Wick, Wick
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Wick, Wick, Wick, Wick