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_20854943_2 (loa__metres_ VARCHAR, yacht VARCHAR)
### Question:
How many LOA (metres) reported for Black Jack?
### Answer:
SELECT COUNT(loa__metres_) FROM table_20854943_2 WHERE yacht = "Black Jack"