ผลิตภัณฑ์ชื่อ "ยี่หร่า" มีหน่วยวัดเป็นข้อใด
What is the unit of measurement of product named "cumin"?
product_df = pd.DataFrame(columns = ['product_category_code', 'product_name']); ref_product_categories_df = pd.DataFrame(columns = ['unit_of_measure', 'product_category_code'])
ref_product_categories_df.loc[product_df.loc[product_df['product_name']=='cumin', 'product_category_code'].values[0], 'unit_of_measure']