CREATE TABLE table_47383 ("Name" CLOB, "Born-Died" CLOB, "Term start" CLOB, "Term end" CLOB, "Political Party" CLOB)

What is the Term Start date of the Progressive Party Prime Minister?
SELECT "Term start" FROM table_47383 WHERE "Political Party" = 'progressive party'
SELECT "Term start" FROM "table_47383" WHERE "Political Party" = 'progressive party'