Table schema:
CREATE TABLE table_name_52 (city VARCHAR, plant_hardiness_zone VARCHAR, january VARCHAR)

Question: 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)"