Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_89 (writer VARCHAR, producer VARCHAR, director VARCHAR)
### Question:
Who was the writer that the director was Alice Troughton and the producer was Phil Collinson?
### Answer:
SELECT writer FROM table_name_89 WHERE producer = "phil collinson" AND director = "alice troughton"