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:
| Ordinary income rate | Long-term capital gain rate | Short-term capital gain rate | Long-term gain on commercial buildings* | Long-term gain on collectibles |
| --- | --- | --- | --- | --- |
| 10% | 0% | 10% | 10% | 10% |
| 15% | 0% | 15% | 15% | 15% |
| 25% | 15% | 25% | 25% | 25% |
| 28% | 15% | 28% | 25% | 28% |
| 33% | 15% | 33% | 25% | 28% |
| 35% | 15% | 35% | 25% | 28% |
Question:
What is the long-term gain for commercial buildings with a short-term capital gain rate of 15%?
Answer:
15%