Table: giro_1999_stage
Columns: date
course
distance
type
winner

Question: Who was the winner with a mountain stage type on 22 May?
SQL: SELECT "winner" FROM giro_1999_stage WHERE "type" = 'mountain stage' AND "date" = '22 may'

Question: Which course had a mountain stage type on 3 June?
SQL: SELECT "course" FROM giro_1999_stage WHERE "type" = 'mountain stage' AND "date" = '3 june'

Question: What was the course type on 22 May?
SQL: SELECT "type" FROM giro_1999_stage WHERE "date" = '22 may'