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_15 (self_employed VARCHAR, investment_income VARCHAR, other_income_sources VARCHAR, employment___salaries_ VARCHAR, _wages_ VARCHAR)

### Question ###
Investment income of 2%, and an other income sources of 3%, and an employment (salaries & wages) of 71% involves which self employed?

### Accurate SQL ###

SELECT self_employed FROM table_name_15 WHERE investment_income = "2%" AND other_income_sources = "3%" AND employment___salaries_ & _wages_ = "71%"