Table: donington_festivals_2
Columns: year
date
event
days
stages
acts

Question: When was the Metallica: Escape from the Studio show?
SQL: SELECT "date" FROM donington_festivals_2 WHERE "event" = 'metallica: escape from the studio'

Question: When is the Monsters of Rock show with 12 bands?
SQL: SELECT "date" FROM donington_festivals_2 WHERE "event" = 'monsters of rock' AND "acts" = '12 bands'