user
Instruction
Answer the question based on the provided table.


Table
Table Title: List of radio station callsigns in Tasmania
Table Content:
| Callsign | Area served | Frequency | Band | Fate | Freq currently | Purpose |
| --- | --- | --- | --- | --- | --- | --- |
| 7CAE | Hobart | 092.1 | FM | Changed call to 7THE ca. 1980 | 7THE | Community |
| 7DY | Derby |  | AM | Moved to Scottsdale and changed call to 7SD in 1954 | 7SD | Commercial |
| 7EX | Launceston | 1008 | AM | Moved to FM in 2008 as 7EXX | silent | Commercial |
| 7HO | Hobart | 0864 | AM | Moved to FM in 1990 as 7HHO | 7RPH | Commercial |
| 7HT | Hobart | 1080 | AM | Moved to FM in 1998 as 7XXX | 7TAB (HPON) | Commercial |
| 7LA | Launceston | 1098 | AM | Moved to FM in 2008 as 7LAA | silent | Commercial |
| 7NT | Launceston | 0711 | AM | Moved to FM in 2006, retained call | silent | National |
| 7QN | Queenstown | 0630 | AM | Moved to FM in 1991, retained call | 7RN | National |
| 7QT | Queenstown | 0837 | AM | Changed call to 7XS in 1988 | 7XS | Commercial |
| 7UV | Ulverstone |  | AM | Moved to Devonport and changed call to 7AD in 1940 | 7AD | Commercial |
| 7ZL | Hobart | 0603 | AM | Changed call to 7RN in 1991 | 7RN | National |


Question
each callsign in this list begins with...


Answer Format
The final answer should be concise and use the following format:
```json
{
    "answer": [
        "answer1",
        "answer2",
        ...
    ]
}
```
rule
["7"]