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:
| Home team | Home team score | Away team | Away team score | Venue | Crowd | Date |
| --- | --- | --- | --- | --- | --- | --- |
| Melbourne | 21.15 (141) | St Kilda | 31.18 (204) | MCG | 24852.0 | 6 May 1978 |
| Geelong | 12.16 (88) | North Melbourne | 16.14 (110) | Kardinia Park | 23074.0 | 6 May 1978 |
| Essendon | 22.18 (150) | Richmond | 19.15 (129) | Windy Hill | 21946.0 | 6 May 1978 |
| Carlton | 19.12 (126) | Hawthorn | 24.13 (157) | Princes Park | 19464.0 | 6 May 1978 |
| Fitzroy | 14.12 (96) | Collingwood | 22.16 (148) | Junction Oval | 25282.0 | 6 May 1978 |
| South Melbourne | 18.15 (123) | Footscray | 16.9 (105) | VFL Park | 19263.0 | 6 May 1978 |
Question:
Which date did richmond play as away?
Answer:
6 May 1978