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 |
| --- | --- | --- | --- | --- | --- | --- |
| Geelong | 12.18 (90) | Melbourne | 15.16 (106) | Corio Oval | 12000.0 | 20 May 1939 |
| Essendon | 14.21 (105) | St Kilda | 8.18 (66) | Windy Hill | 18000.0 | 20 May 1939 |
| Richmond | 16.22 (118) | North Melbourne | 13.11 (89) | Punt Road Oval | 11000.0 | 20 May 1939 |
| South Melbourne | 18.12 (120) | Footscray | 16.6 (102) | Lake Oval | 14000.0 | 20 May 1939 |
| Fitzroy | 11.13 (79) | Collingwood | 17.14 (116) | Brunswick Street Oval | 15000.0 | 20 May 1939 |
| Hawthorn | 13.8 (86) | Carlton | 11.17 (83) | Glenferrie Oval | 20000.0 | 20 May 1939 |
Question:
What was the date of the Collingwood away game?
Answer:
20 May 1939