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_30 (heat INTEGER, nationality VARCHAR, result VARCHAR)
### Question:
Which Heat has a Nationality of bulgaria, and a Result larger than 55.97?
### Answer:
SELECT MIN(heat) FROM table_name_30 WHERE nationality = "bulgaria" AND result > 55.97