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_37 (purpose VARCHAR, yield VARCHAR, location VARCHAR, elevation_ VARCHAR, _height VARCHAR)

### Question ###
Which Purpose has an Elevation + Height of 0 + metres (ft), a Location of bikini, namu (charlie), and a Yield of 220 kt?

### Accurate SQL ###

SELECT purpose FROM table_name_37 WHERE elevation_ + _height = "0 + metres (ft)" AND location = "bikini, namu (charlie)" AND yield = "220 kt"