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_2155350_2 (capacity__litres_ VARCHAR, cab_size VARCHAR, category VARCHAR)

### Question ###
Name the capacity for single cab size 2 medium tanker

### Accurate SQL ###

SELECT capacity__litres_ FROM table_2155350_2 WHERE cab_size = "Single" AND category = "2 Medium tanker"