Table: rugby_1978_tour
Columns: opposing_team
against
date
venue
status

Question: Which the lowest Against has a Status of tour match, and a Venue of ravenhill , belfast?
SQL: SELECT MIN("against") FROM rugby_1978_tour WHERE "status" = 'tour match' AND "venue" = 'ravenhill , belfast'

Question: Name the average Against that has a Venue of twickenham , london on 25 november 1978?
SQL: SELECT AVG("against") FROM rugby_1978_tour WHERE "venue" = 'twickenham , london' AND "date" = '25 november 1978'

Question: Name the highest Against on 21 november 1978?
SQL: SELECT MAX("against") FROM rugby_1978_tour WHERE "date" = '21 november 1978'

Question: Name the Against of Venue of brewery field , bridgend?
SQL: SELECT "against" FROM rugby_1978_tour WHERE "venue" = 'brewery field , bridgend'

Question: Name the Status with an Against larger than 15?
SQL: SELECT "status" FROM rugby_1978_tour WHERE "against" > 15