user: Question: What is the name of the team song written by Ken Walther?
Columns: ['Club name', 'Name of team song', 'Basis for team song', 'First used as team song', 'Writer/composer']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Adelaide', '"The Pride of South Australia"', '" US Marines\' Hymn "', '1992', 'Bill Sanders']
SQL:

assistant: SELECT "Basis for team song" FROM "Table" WHERE "Writer/composer" = 'Ken Walther';