How many did alco -schenectady preserve of class b-3?
CREATE TABLE table_name_68 (quantity_preserved VARCHAR, manufacturer VARCHAR, class VARCHAR)
SELECT quantity_preserved FROM table_name_68 WHERE manufacturer = "alco -schenectady" AND class = "b-3"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_68 (quantity_preserved VARCHAR, manufacturer VARCHAR, class VARCHAR) Question: How many did alco -schenectady preserve of class b-3? [/INST] SELECT quantity_preserved FROM table_name_68 WHERE manufacturer = "alco -schenectady" AND class = "b-3" </s>