Table schema:
CREATE TABLE table_1825751_4 (binibining_pilipinas_international VARCHAR, miss_universe_philippines VARCHAR)

Question: How many winners of Binibining Pilipinas-International when Nina Ricci Alagao?
SQL: SELECT COUNT(binibining_pilipinas_international) FROM table_1825751_4 WHERE miss_universe_philippines = "Nina Ricci Alagao"