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:
| Song | Chinese | Hito Radio\nTop 10 | 9+2 Music\nTop 15 | Global Asia\nTop 15 | UFO Radio\nTop 15 | Channel [V]\nTop 20 | MTV Taiwan\nTop 20 | YES 93.3\nTop 20 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Super Star |  | 3 | - | >4 | 3 | 4 | - | 14 |
| Far Away | 遠方 | - | - | 3 | 2 | 5 | - | 7 |
| Half-Sugarism | 半糖主義 | 3 | - | - | 7 | - | 3 | - |
| River Shore Park | 河濱公園 | 1 | 2 | - | - | - | - | - |
| I.O.I.O |  | 2 | - | - | 5 | 3 | - | - |
| Heavy Rain | 落大雨 | 1 | - | - | - | - | >1 | - |
| Smile of Summer | 夏天的微笑 | 3 | - | - | - | - | 7 | - |
Question:
which song had the most weeks on the ufo radio top 15 chart?
Answer:
Half-Sugarism