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:
| Peak | Height (m) | Prom. (m) | Class | Parent |
| --- | --- | --- | --- | --- |
| Grasmoor | 852.0 | 519.0 | Marilyn | Scafell Pike |
| Crag Hill | 839.0 | 117.0 | Hewitt | Grasmoor |
| Grisedale Pike | 791.0 | 189.0 | Marilyn | Grasmoor |
| Sail | 773.0 | 32.0 | Hewitt | Crag Hill |
| Wandope | 772.0 | 30.0 | Hewitt | Crag Hill |
| Hopegill Head | 770.0 | 97.0 | Hewitt | Grisedale Pike |
| Sand Hill | 756.0 | 18.0 | Nuttall | Hopegill Head |
| Dale Head | 753.0 | 397.0 | Marilyn | Great Gable |
| Hobcarton Crag | 739.0 | 37.0 | Hewitt | Grisedale Pike |
| Robinson | 737.0 | 161.0 | Marilyn | Dale Head |
| Hindscarth | 727.0 | 71.0 | Hewitt | Dale Head |
| Whiteside east top | 719.0 | 39.0 | Hewitt | Hopegill Head |
| Whiteside | 707.0 | 18.0 | Nuttall | Whiteside east top |
| Ladyside Pike | 703.0 | 28.0 | Nuttall | Hopegill Head |
| Scar Crags | 672.0 | 55.0 | Hewitt | Crag Hill |
| Whiteless Pike | 660.0 | 36.0 | Hewitt | Crag Hill |
| High Spy | 653.0 | 148.0 | Hewitt | Dale Head |
| Causey Pike | 637.0 | 40.0 | Hewitt | Scar Crags |
| High Spy north top | 634.0 | 16.0 | Nuttall | High Spy |
| Hobcarton End | 634.0 | 15.0 | Nuttall | Grisedale Pike |
Question:
What is the lowest height for Parent grasmoor when it has a Prom larger than 117?
Answer:
791.0