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