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_42801 ( "Office" text, "Democratic ticket" text, "Republican ticket" text, "Prohibition ticket" text, "Greenback ticket" text )

### Question ###
Who was on the Prohibition ticket when Thomas Armstrong ran on the Greenback ticket?

### Accurate SQL ###

SELECT "Prohibition ticket" FROM table_42801 WHERE "Greenback ticket" = 'thomas armstrong'