Who was the vacator when the date successor seated was august 21, 1973?
CREATE TABLE table_1134091_4 (vacator VARCHAR, date_successor_seated VARCHAR)
SELECT vacator FROM table_1134091_4 WHERE date_successor_seated = "August 21, 1973"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_1134091_4 (vacator VARCHAR, date_successor_seated VARCHAR) Question: Who was the vacator when the date successor seated was august 21, 1973? [/INST] SELECT vacator FROM table_1134091_4 WHERE date_successor_seated = "August 21, 1973" </s>