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_90 (year VARCHAR, nominee VARCHAR, category VARCHAR)
### Question:
Which Year has a Nominee of stephen sondheim, and a Category of the best original score?
### Answer:
SELECT year FROM table_name_90 WHERE nominee = "stephen sondheim" AND category = "best original score"