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_70400 ( "Year" real, "Division" text, "League" text, "Reg. Season" text, "Playoffs" text, "Open Cup" text )

### Question ###
What open cup did they play in when they finished 2nd, northeast in the reg. season?

### Accurate SQL ###

SELECT "Open Cup" FROM table_70400 WHERE "Reg. Season" = '2nd, northeast'