Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_12454156_1 (winner VARCHAR, losing_hand VARCHAR)

### Question ###
Who is the winner where the losing hand is Ah 7s?

### Accurate SQL ###

SELECT winner FROM table_12454156_1 WHERE losing_hand = "Ah 7s"