CREATE TABLE table_name_52 (city VARCHAR(255), plant_hardiness_zone VARCHAR(255), january VARCHAR(255))
In what city is the plant hardiness zone 2B and January temp is −12/−23°c (10/-9°f)?
    
SQL: SELECT city FROM table_name_52 WHERE plant_hardiness_zone = "2b" AND january = "−12/−23°c (10/-9°f)"