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:
| Opposing Team | Against | Date | Venue | Status |
| --- | --- | --- | --- | --- |
| Cambridge University | 12.0 | 18 October 1978 | Grange Road, Cambridge | Tour Match |
| Cardiff | 7.0 | 21 October 1978 | Cardiff Arms Park , Cardiff | Tour Match |
| West Wales XV | 7.0 | 25 October 1978 | St Helen's , Swansea | Tour Match |
| London Counties | 12.0 | 28 October 1978 | Twickenham , London | Tour Match |
| Munster | 12.0 | 31 October 1978 | Thomond Park , Limerick | Tour Match |
| IRELAND | 6.0 | 4 November 1978 | Lansdowne Road , Dublin | Test Match |
| Ulster | 7.0 | 7 November 1978 | Ravenhill , Belfast | Tour Match |
| WALES | 12.0 | 11 November 1978 | Cardiff Arms Park , Cardiff | Test Match |
| South and South-West Counties | 0.0 | 15 November 1978 | Memorial Ground , Bristol | Tour Match |
| Midland Counties | 15.0 | 18 November 1978 | Welford Road , Leicester | Tour Match |
| Combined Services | 6.0 | 21 November 1978 | Aldershot Military Stadium , Aldershot | Tour Match |
| ENGLAND | 6.0 | 25 November 1978 | Twickenham , London | Test Match |
| Monmouthshire | 9.0 | 29 November 1978 | Rodney Parade , Newport | Tour Match |
| North of England | 6.0 | 2 December 1978 | Birkenhead Park, Birkenhead | Tour Match |
| North and Midland of Scotland | 3.0 | 5 December 1978 | Linksfield Stadium, Aberdeen | Tour Match |
| SCOTLAND | 9.0 | 9 December 1978 | Murrayfield , Edinburgh | Test Match |
| Bridgend | 6.0 | 13 December 1978 | Brewery Field , Bridgend | Tour Match |
| Barbarians | 16.0 | 16 December 1978 | Cardiff Arms Park , Cardiff | Tour Match |
Question:
Which the lowest Against has a Status of tour match, and a Venue of ravenhill , belfast?
Answer:
7.0