What is the average year for Wallenstein with 1a1 design?
CREATE TABLE table_name_49 (acquired INTEGER, design VARCHAR, name VARCHAR)
SELECT AVG(acquired) FROM table_name_49 WHERE design = "1a1" AND name = "wallenstein"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_49 (acquired INTEGER, design VARCHAR, name VARCHAR) Question: What is the average year for Wallenstein with 1a1 design? [/INST] SELECT AVG(acquired) FROM table_name_49 WHERE design = "1a1" AND name = "wallenstein" </s>