Table schema:
CREATE TABLE poker_player (People_ID VARCHAR, Earnings VARCHAR); CREATE TABLE people (Birth_Date VARCHAR, People_ID VARCHAR)

Question: What is the birth date of the poker player with the lowest earnings?
SQL: SELECT T1.Birth_Date FROM people AS T1 JOIN poker_player AS T2 ON T1.People_ID = T2.People_ID ORDER BY T2.Earnings LIMIT 1