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_70 (school_club_team VARCHAR, years_for_grizzlies VARCHAR, nationality VARCHAR, position VARCHAR)

### Question ###
What team is from the United States and plays a guard position for the Grizzlies in 2012?

### Accurate SQL ###

SELECT school_club_team FROM table_name_70 WHERE nationality = "united states" AND position = "guard" AND years_for_grizzlies = "2012"