Which year had e34 Nimzo-Indian defence is the opening?
CREATE TABLE table_name_81 (year VARCHAR, opening VARCHAR)
SELECT year FROM table_name_81 WHERE opening = "e34 nimzo-indian defence"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_81 (year VARCHAR, opening VARCHAR) Question: Which year had e34 Nimzo-Indian defence is the opening? [/INST] SELECT year FROM table_name_81 WHERE opening = "e34 nimzo-indian defence" </s>