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_1825751_4 (second_runner_up VARCHAR, binibining_pilipinas_world VARCHAR)

### Question ###
Who is the second runner up when Janina San Miguel won binibining pilipinas-world?

### Accurate SQL ###

SELECT COUNT(second_runner_up) FROM table_1825751_4 WHERE binibining_pilipinas_world = "Janina San Miguel"