user: Question: What is the gender of senior high school 26mm?
Columns: ['Specification', 'Gender', 'Junior High School (12–15 yrs)', 'Senior High School (15–18 yrs)', 'University students and Adults (18yrs+)']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Maximum length', 'Male & female', '114cm', '117cm', '120cm']
SQL:

assistant: SELECT "Gender" FROM "Table" WHERE "Senior High School (15–18 yrs)" = '26mm';