user: Question: what is the winter olympics when the country is Soviet Union and holmenkollen is 1970, 1979?
Columns: ['Winner', 'Country', 'Winter Olympics', 'FIS Nordic World Ski Championships', 'Holmenkollen']
Types: ['text', 'text', 'real', 'text', 'text']
Sample row: ['Ljubov Kozyreva', 'Soviet Union', 1956.0, '1954, 1956', '1955']
SQL:

assistant: SELECT "Winter Olympics" FROM "Table" WHERE "Country" = 'Soviet Union' AND "Holmenkollen" = '1970, 1979';