Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Winner | Country | Winter Olympics | FIS Nordic World Ski Championships | Holmenkollen |
| --- | --- | --- | --- | --- |
| Thorleif Haug | Norway | 1924 | 1924 | 1919, 1920, 1921 |
| Johan Grøttumsbråten | Norway | 1928, 1932 | 1926, 1928, 1931, 1932 | 1923, 1926, 1928, 1929, 1931 |
| Oddbjørn Hagen | Norway | 1936 | 1934, 1935, 1936 | 1932, 1934, 1935 |
| Heikki Hasu | Finland | 1948 | 1948, 1950 | 1953 |
| Simon Slåttvik | Norway | 1952 | 1952 | 1948, 1950, 1951 |
| Sverre Stenersen | Norway | 1956 | 1954, 1956 | 1955, 1956, 1959 |
| Georg Thoma | Federal Republic of Germany | 1960 | 1960, 1966 | 1963, 1964, 1965, 1966 |
| Tormod Knutsen | Norway | 1964 | 1964 | 1958 |
| Franz Keller | Federal Republic of Germany | 1968 | 1968 | 1967 |
| Ulrich Wehling | German Democratic Republic | 1972, 1976, 1980 | 1972, 1974, 1976, 1980 | 1975, 1976, 1977 |
| Tom Sandberg | Norway | 1984 | 1982 | 1974, 1982 |
| Bjarte Engen Vik | Norway | 1998 | 1999, 2001 | 1996, 1997, 1998, 1999, 2000 |
| Jason Lamy-Chappuis | France | 2010 | 2011 | 2007, 2010 |
Question:
Which Winner has a Winter Olympics of 1968?
Answer:
Franz Keller