What is the product category description and unit of measurement of category "Herbs"?
SELECT product_category_description ,  unit_of_measure FROM ref_product_categories WHERE product_category_code  =  "Herbs"
SELECT product_category_description ,  unit_of_measure FROM ref_product_categories WHERE product_category_code  =  "Herbs"
[{'product_category_description': 'Herbs', 'unit_of_measure': 'Handful             '}]