On what date was James P. Buchanan (d)'s successor seated?
CREATE TABLE table_2159547_3 (date_successor_seated VARCHAR, vacator VARCHAR)
SELECT date_successor_seated FROM table_2159547_3 WHERE vacator = "James P. Buchanan (D)"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_2159547_3 (date_successor_seated VARCHAR, vacator VARCHAR) Question: On what date was James P. Buchanan (d)'s successor seated? [/INST] SELECT date_successor_seated FROM table_2159547_3 WHERE vacator = "James P. Buchanan (D)" </s>