Table: rangers_match_data
Columns: date
round
opponent
venue
result
attendance

Question: Tell me the result for venue of a
SQL: SELECT "result" FROM rangers_match_data WHERE "venue" = 'a'

Question: I want to know the average attendance for n venue and f round
SQL: SELECT AVG("attendance") FROM rangers_match_data WHERE "venue" = 'n' AND "round" = 'f'