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_20 (attendance VARCHAR, opponents VARCHAR, h___a VARCHAR)
### Question:
What was the Attendance when Lincoln City was the Opponents with H/A of A?
### Answer:
SELECT COUNT(attendance) FROM table_name_20 WHERE opponents = "lincoln city" AND h___a = "a"