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_77 (crowd INTEGER, away_team VARCHAR)
### Question:
What was the attendance when North Melbourne was the away team?
### Answer:
SELECT AVG(crowd) FROM table_name_77 WHERE away_team = "north melbourne"