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:
| Time | Home team | Score | Away team | Venue |
| --- | --- | --- | --- | --- |
| 15:00 | Derico | 0 - 3 | Citizen Team A | Mong Kok Stadium |
| 15:30 | Tuen Mun Progoal Team A | 1 - 1; 7 - 8 ( PSO ) | Mutual Team A | Mong Kok Stadium |
| 16:00 | South China Team A | 1 - 4 | Convoy Sun Hei Team A | Mong Kok Stadium |
| 16:30 | TSW Pegasus Team A | 0 - 5 | NTR WF Tai Po Team A | Mong Kok Stadium |
| 17:00 | Eastern Team A | 2 - 0 | Shatin | Mong Kok Stadium |
| 17:30 | South China Team B | 0 - 3 | Fourway Team B | Mong Kok Stadium |
| 18:00 | Citizen Team B | 0 - 1 | Convoy Sun Hei Team B | Mong Kok Stadium |
| 18:30 | TSW Pegasus Team B | 0 - 1 | Happy Valley Team B | Mong Kok Stadium |
| 19:00 | HKSSF | 0 - 4 | Mutual Team B | Mong Kok Stadium |
| 19:30 | Tuen Mun Progoal Team B | 0 - 1 | Kitchee Team B | Mong Kok Stadium |
Question:
What was the away team for the match that had a time of 18:30?
Answer:
Happy Valley Team B