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:
| Year | Start | Qual | Rank | Finish | Laps |
| --- | --- | --- | --- | --- | --- |
| 1955 | 16 | 139.811 | 15 | 7 | 200.0 |
| 1956 | 27 | 141.610 | 23 | 28 | 74.0 |
| 1957 | 30 | 140.007 | 29 | 21 | 111.0 |
| 1959 | 23 | 141.939 | 29 | 13 | 200.0 |
| 1960 | 30 | 141.838 | 31 | 32 | 34.0 |
| Totals | Totals | Totals | Totals | Totals | 619.0 |
Question:
What is the qualification for rank of 29 in 1957?
Answer:
140.007