Table: railway_stations
Columns: stations
place
managed_by
platforms
zone

Question: Name the average zone for waddon marsh tram stop
SQL: SELECT AVG("zone") FROM railway_stations WHERE "stations" = 'waddon marsh tram stop'

Question: Name the stations for zone 5 and 1 platform by tramlink
SQL: SELECT "stations" FROM railway_stations WHERE "managed_by" = 'tramlink' AND "zone" = 5 AND "platforms" = 1

Question: Name the total number of platforms that waddon railway station has
SQL: SELECT COUNT("platforms") FROM railway_stations WHERE "stations" = 'waddon railway station'

Question: Name the average zone for waddon railway station and has more than 2 platforms
SQL: SELECT AVG("zone") FROM railway_stations WHERE "stations" = 'waddon railway station' AND "platforms" > 2