SELECT junior_high_school__12_15_yrs_ FROM table_13555999_1 WHERE gender = "Male" AND specification = "Minimum diameter of sakigawa"
Berapa jumlah sekolah menengah pertama di mana jenis kelamin laki -laki dan spesifikasinya diameter minimum Sakigawa?
CREATE TABLE table_13555999_1 (junior_high_school__12_15_yrs_ VARCHAR, gender VARCHAR, specification VARCHAR)