Table: shinai_sizes
Columns: specification
gender
junior_high_school_12_15_yrs
senior_high_school_15_18_yrs
university_students_and_adults_18yrs

Question: Which University students and adults have minimum diameter of Sakigawa for female gender?
SQL: SELECT "university_students_and_adults_18yrs" FROM shinai_sizes WHERE "specification" = 'minimum diameter of sakigawa' AND "gender" = 'female'

Question: Which junior high school has male and female genders?
SQL: SELECT "junior_high_school_12_15_yrs" FROM shinai_sizes WHERE "gender" = 'male and female'

Question: Which gender is associated with University students and adults of 25mm?
SQL: SELECT "gender" FROM shinai_sizes WHERE "university_students_and_adults_18yrs" = '25mm'

Question: Which junior high school has university students and adults of 26mm?
SQL: SELECT "junior_high_school_12_15_yrs" FROM shinai_sizes WHERE "university_students_and_adults_18yrs" = '26mm'

Question: What value for university students and adult goes with male gender for minimum weight?
SQL: SELECT "university_students_and_adults_18yrs" FROM shinai_sizes WHERE "gender" = 'male' AND "specification" = 'minimum weight'