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:
| Rank | Rider | Team | Speed | Time |
| --- | --- | --- | --- | --- |
| 1.0 | Georg Auerbacher /H.Hahn | BMW | 86.86mph | 1.18.12.0 |
| 2.0 | A.J.Samson/D.A.Jose | Triumph | 82.50mph | 1.22.20.2 |
| 3.0 | R.Williamson/J.McPherson | Weslake | 82.25mph | 1.23.50.0 |
| 4.0 | R.Woodhouse/D.Woodhouse | Honda | 81.91mph | 1.22.55.0 |
| 5.0 | D.Wood/D.Coomber | Norton | 81.19mph | 1.23.39.8 |
| 6.0 | D.Plummer/M.Brett | Triumph | 80.77mph | 1.24.05.6 |
| 7.0 | B.Currie/M.Scott | Triumph | 80.60mph | 1.24.16.2 |
| 8.0 | M.Potter/P.J.Burleigh | BSA | 80.18mph | 1.24.43.4 |
| 9.0 | D.Hawes/J.P.Mann | Seeley | 80.09mph | 1.24.48.6 |
| 10.0 | A.Methersill/M.Mitchinson | AMS | 79.52mph | 1.25.24.8 |
Question:
Which Rider finished with a speed of 81.91mph?
Answer:
R.Woodhouse/D.Woodhouse