65101
Swimming in heat two , he rounded out the field of seven swimmers to last place and forty-ninth overall by a 5.32-second margin behind winner Mark Chay of Singapore in 1:57.54 .
 Mark Chay
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Mark Chay