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_10710364_2 (sex_ratio__child_ INTEGER, work_participation___percentage_ VARCHAR)

### Question ###
What is the lowest child sex ratio in groups where employment is 31.3%?

### Accurate SQL ###

SELECT MIN(sex_ratio__child_) FROM table_10710364_2 WHERE work_participation___percentage_ = "31.3%"