Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_13555999_1 (specification VARCHAR, senior_high_school__15_18_yrs_ VARCHAR)
### Question:
What is the specification where senior high school is 25mm?
### Answer:
SELECT specification FROM table_13555999_1 WHERE senior_high_school__15_18_yrs_ = "25mm"