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_27 (constellation VARCHAR, right_ascension___j2000__ VARCHAR)
### Question:
What Constellation has a 20h56m40s Right Ascension (J2000)?
### Answer:
SELECT constellation FROM table_name_27 WHERE right_ascension___j2000__ = "20h56m40s"