Table: mahjong_game
Columns: hand_number
prevailing_wind
player_1
player_2
player_3

Question: What is the hand number of the hand where player 1 is south and the east wind is prevailing?
SQL: SELECT COUNT("hand_number") FROM mahjong_game WHERE "player_1" = 'South' AND "prevailing_wind" = 'East'

Question: What is player 1 when player 3 is South and the prevailing wind is South?
SQL: SELECT "player_1" FROM mahjong_game WHERE "player_3" = 'South' AND "prevailing_wind" = 'South'