What is the category of the business with short review length and highest review stars within business ID from 7 to 14?
category of the business refers to category_name; short review length refers to review_length = 'Short'; the highest star rating refers to MAX(stars); business ID from 7 to 14 refers to business_id BETWEEN 7 AND 14
SELECT DISTINCT T3.category_name FROM Reviews AS T1 INNER JOIN Business_Categories AS T2 ON T1.business_id = T2.business_id INNER JOIN Categories AS T3 ON T2.category_id = T3.category_id WHERE T2.business_id >= 7 AND T2.business_id < 15 AND T1.review_length = 'Short' AND T1.review_stars = ( SELECT MAX(review_stars) FROM Reviews )