CREATE TABLE table_name_26 (country VARCHAR(255), holmenkollen VARCHAR(255), fis_nordic_world_ski_championships VARCHAR(255), winter_olympics VARCHAR(255))
Which country has a FIS Nordic World Ski Championship before 1989, was in the winter Olympics before 1980, and has a Holmenkollen of 1956?
    
SQL: SELECT country FROM table_name_26 WHERE fis_nordic_world_ski_championships < 1989 AND winter_olympics < 1980 AND holmenkollen = "1956"