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:
| Rider | Year | Final Position - Giro | Final Position - Tour | Final Position - Vuelta |
| --- | --- | --- | --- | --- |
| Eduardo Chozas | 1990.0 | 11.0 | 6.0 | 33.0 |
| Marino Lejarreta (3) | 1990.0 | 7.0 | 5.0 | 55.0 |
| Marino Lejarreta (2) | 1989.0 | 10.0 | 5.0 | 20.0 |
| Luis-Javier Lukin | 1988.0 | 32.0 | 82.0 | 60.0 |
| Marino Lejarreta | 1987.0 | 4.0 | 10.0 | 34.0 |
| Philippe Poissonier | 1985.0 | 86.0 | 90.0 | 66.0 |
| Jose Luis Uribezubia | 1971.0 | 29.0 | 50.0 | 27.0 |
| Jose Manuel Fuente | 1971.0 | 39.0 | 72.0 | 54.0 |
| Federico Bahamontes | 1958.0 | 17.0 | 8.0 | 6.0 |
| Pierino Baffi | 1958.0 | 23.0 | 63.0 | 37.0 |
| Mario Baroni | 1957.0 | 74.0 | 53.0 | 46.0 |
| Gastone Nencini | 1957.0 | 1.0 | 6.0 | 9.0 |
| Bernardo Ruiz (3) | 1957.0 | 55.0 | 24.0 | 3.0 |
| Arrigo Padovan | 1956.0 | 12.0 | 26.0 | 19.0 |
| Bernardo Ruiz (2) | 1956.0 | 38.0 | 70.0 | 31.0 |
| José Serra | 1956.0 | 26.0 | 81.0 | 9.0 |
| Raphael Geminiani | 1955.0 | 4.0 | 6.0 | 3.0 |
| Bernardo Ruiz | 1955.0 | 28.0 | 22.0 | 14.0 |
| Louis Caput | 1955.0 | 68.0 | 54.0 | 55.0 |
Question:
How many Giro positions are associated with the year 1971 and Tour final positions over 50?
Answer:
1.0