user: Question: Which Author's Company is Ruth Kanner Theatre Group?
Columns: ['play', 'author', 'company', 'base', 'country']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Electra and Orestes, the Trial', 'based on Aeschylus , Sophocles and Euripides', 'Cyprus Theatre Organisation', 'Nicosia', 'Cyprus']
SQL:

assistant: SELECT "author" FROM "Table" WHERE "company" = 'Ruth Kanner Theatre Group';