256440
As he looks into the homicide , the young detective Wang Bu Er ( Wen Zhang ) , the police station 's reckless buffoon , makes a shocking statement that this is a serial murder .
 Wen Zhang
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Wen Zhang