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_61504 ( "Year" real, "Binibining Pilipinas-Universe" text, "Binibining Pilipinas-World" text, "Binibining Pilipinas International" text, "Miss Maja Pilipinas" text, "First runner-up" text, "Second runner-up" text )

### Question ###
Which Binibining Pilipinas-World has a Second runner-up of sonia santiago?

### Accurate SQL ###

SELECT "Binibining Pilipinas-World" FROM table_61504 WHERE "Second runner-up" = 'sonia santiago'