Question: What is the hand number of the hand where player 1 is south and the east wind is prevailing?
Schema: create table table_26853172_1 (hand_number varchar, player_1 varchar, prevailing_wind varchar, PRIMARY KEY (hand_number))
SQL: select count(hand_number) from table_26853172_1 where player_1 = "south" and prevailing_wind = "east"