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_51 (built VARCHAR, period VARCHAR)
### Question:
How many cabins were built in the time between 1967-1987?
### Answer:
SELECT built FROM table_name_51 WHERE period = "1967-1987"