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_1123802_1 ( compression_ratio VARCHAR, engine VARCHAR )

### Question ###
What was the compression ration when the engine was Wasp Jr. T1B2?

### Accurate SQL ###

SELECT compression_ratio FROM table_1123802_1 WHERE engine = "Wasp Jr. T1B2"