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_name_32 ( goals_for INTEGER, goals_against VARCHAR, ties VARCHAR )

### Question ###
what is the least number of goals for when the goals against is 70 and the ties less than 0?

### Accurate SQL ###

SELECT MIN(goals_for) FROM table_name_32 WHERE goals_against = 70 AND ties < 0