936
Its sub-constituencies are Bishan East-Thomson , Bishan North , Toa Payoh West-Balestier , Toa Payoh Central and Toa Payoh East-Novena .
 Bishan East-Thomson, Bishan North, Toa Payoh West-Balestier, Toa Payoh Central, Toa Payoh East-Novena
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Bishan East-Thomson, Bishan North, Toa Payoh West-Balestier, Toa Payoh Central, Toa Payoh East-Novena