Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_28742659_2 ( vote VARCHAR, immunity VARCHAR, reward VARCHAR )

### Question ###
What is the vote number when immunity listed as David and reward is listed as none?

### Accurate SQL ###

SELECT vote FROM table_28742659_2 WHERE immunity = "David" AND reward = "None"