Who vacated his post when his successor was formally installed on May 11, 1966?
CREATE TABLE table_1847180_3 (vacator VARCHAR, date_of_successors_formal_installation VARCHAR)
SELECT vacator FROM table_1847180_3 WHERE date_of_successors_formal_installation = "May 11, 1966"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_1847180_3 (vacator VARCHAR, date_of_successors_formal_installation VARCHAR) Question: Who vacated his post when his successor was formally installed on May 11, 1966? [/INST] SELECT vacator FROM table_1847180_3 WHERE date_of_successors_formal_installation = "May 11, 1966" </s>