user: Question: What is the companion for the author Dave Stone?
Columns: ['Title', 'Author', 'Doctor', 'Companion(s)', 'Published']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Time and Relative', 'Kim Newman', '1st', 'Susan Foreman', 'November 2001']
SQL:

assistant: SELECT "Companion(s)" FROM "Table" WHERE "Author" = 'Dave Stone';