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 |
| --- | --- | --- | --- | --- | --- | --- |
| North Melbourne | 7.13 (55) | Hawthorn | 16.19 (115) | Arden Street Oval | 8160.0 | 4 July 1981 |
| Fitzroy | 8.13 (61) | Essendon | 11.14 (80) | Junction Oval | 18374.0 | 4 July 1981 |
| Carlton | 6.14 (50) | St Kilda | 5.5 (35) | VFL Park | 21579.0 | 4 July 1981 |
| Geelong | 12.10 (82) | Richmond | 8.4 (52) | Kardinia Park | 26635.0 | 11 July 1981 |
| Footscray | 7.9 (51) | South Melbourne | 17.12 (114) | Western Oval | 10478.0 | 11 July 1981 |
| Melbourne | 10.6 (66) | Collingwood | 12.16 (88) | MCG | 30803.0 | 11 July 1981 |
Question:
When did essendon play away?
Answer:
4 July 1981