When Lincoln City was the away team what is the tie number?
CREATE TABLE table_name_21 (tie_no VARCHAR, away_team VARCHAR)
SELECT tie_no FROM table_name_21 WHERE away_team = "lincoln city"
### Context: CREATE TABLE table_name_21 (tie_no VARCHAR, away_team VARCHAR) ### Question: When Lincoln City was the away team what is the tie number? ### Answer: SELECT tie_no FROM table_name_21 WHERE away_team = "lincoln city"