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_15827397_1 (name VARCHAR, livery VARCHAR)
### Question:
How many locomotives have a livery that is highland railway green
### Answer:
SELECT COUNT(name) FROM table_15827397_1 WHERE livery = "Highland Railway green"