Table: nordic_skiing_winners_4
Columns: winner
country
winter_olympics
fis_nordic_world_ski_championships
holmenkollen

Question: What country was ole ellefsæter from?
SQL: SELECT "country" FROM nordic_skiing_winners_4 WHERE "winner" = 'ole ellefsæter'

Question: Who won the FIS Nordic World Ski Championships in 1972?
SQL: SELECT "winner" FROM nordic_skiing_winners_4 WHERE "fis_nordic_world_ski_championships" = '1972'