12611
Martinez , the 1994 Wimbledon champion , used to struggle at the Open , but has come to terms with the noise , crowds and chaos .
 Open, Martinez, Wimbledon
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, else, organization, person 
Text: {0} 
Answer:
 Open, Martinez, Wimbledon