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 |
| --- | --- | --- | --- | --- | --- | --- |
| Hawthorn | 20.18 (138) | South Melbourne | 15.16 (106) | Princes Park | 11657.0 | 20 June 1981 |
| Geelong | 26.14 (170) | North Melbourne | 8.8 (56) | Kardinia Park | 27395.0 | 20 June 1981 |
| Essendon | 12.22 (94) | Richmond | 13.12 (90) | Windy Hill | 30718.0 | 20 June 1981 |
| Collingwood | 19.14 (128) | St Kilda | 10.11 (71) | Victoria Park | 23669.0 | 20 June 1981 |
| Fitzroy | 20.11 (131) | Carlton | 15.16 (106) | Junction Oval | 18455.0 | 20 June 1981 |
| Footscray | 19.11 (125) | Melbourne | 14.10 (94) | VFL Park | 15599.0 | 20 June 1981 |
Question:
What team was the away team when the home team scored 20.18 (138)?
Answer:
South Melbourne