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:
| Name | Title | First year\nin this position | Years at Nebraska | Alma Mater |
| --- | --- | --- | --- | --- |
| Biff Jones | Head Coach | 1937 | 1937–1941 | Army |
| Henry Schulte | Lineman Coach | 1931 | 1919–1924, 1931–1937 | Michigan |
| Ed Weir | Freshmen Coach | 1929 | 1926, 1929–1937, 1943 | Nebraska |
| W. Harold Browne | Assistant Coach | 1930 | 1930–1940 |  |
| Roy Lyman |  | 1936 | 1936–1941 |  |
| Adolph J. Lewandowski |  | 1937 | 1937–1944 | Nebraska |
| Jerry Adams |  |  | 1937 |  |
| Charles Armstrong |  | 1937 | 1937–1942, 1944 |  |
Question:
how many consecutive years did biff jones coach?
Answer:
4