Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What is the Constituency Number when the Number of Electorates (2003) is more than 156,910, and Reserved for sc?

### Inputs:
table_name: table, columns: ['Constituency number', 'Name', 'Reserved for ( SC / ST /None)', 'District', 'Number of electorates (2003)']

### Response:
SELECT Constituency number FROM table WHERE Number of electorates (2003) > 156,910 AND Reserved for ( SC / ST /None) = sc