What is the category for trains numbered 16609/16610?
CREATE TABLE table_21716139_1 (category VARCHAR, train_no VARCHAR)
SELECT category FROM table_21716139_1 WHERE train_no = "16609/16610"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_21716139_1 (category VARCHAR, train_no VARCHAR) Question: What is the category for trains numbered 16609/16610? [/INST] SELECT category FROM table_21716139_1 WHERE train_no = "16609/16610" </s>