user
Instruction
Answer the question based on the provided table.


Table
Table Title: 'Generating assets' regarding 'Snowy Hydro'
Table Content:
| Name | Fuel | Type | Location | Maximum Capacity (MW) | Commissioned |
| --- | --- | --- | --- | --- | --- |
| Angaston | Diesel | internal combustion | Angaston | 50 | 2005 |
| Blowering | Hydro | Turbo-pump | Blowering Dam | 80 | 1969 |
| Guthega | Hydro | Turbo-pump | Near Guthega | 60 | 1955 |
| Jindabyne Dam | Mini Hydro | Turbo-pump | Jindabyne | 1.1 | 2011 |
| Jounama | Small Hydro | Turbo-pump | Near Jounama | 14.4 | 2010 |
| Laverton North | Natural gas | Gas turbines | Laverton | 320 | 2006 |
| Lonsdale | Diesel | internal combustion | Lonsdale | 21 | 2002 |
| Murray 1 | Hydro | Turbo-pump | Near Khancoban | 950 | 1967 |
| Murray 2 | Hydro | Turbo-pump | Near Khancoban | 550 | 1969 |
| Port Stanvac | Diesel | internal combustion | Lonsdale | 65 | 2011 |
| Tumut 1 | Hydro | Turbo-pump | Tumut | 330 | 1959 |
| Tumut 2 | Hydro | Turbo-pump | Tumut | 286 | 1962 |
| Tumut 3 | Hydro | Turbo-pump | Tumut | 1,500 | 1973 |
| Tumut 3 | Micro Hydro | Turbo-pump | Tumut | 0.720 | 2003 |
| Valley Power | Natural gas | Gas turbines | Traralgon | 300 | 2002 |
| Colongra | Natural gas | Gas turbines | Colongra | 667 | 2009 |


Question
What are the natural gas assets of Snowy Hydro?


Answer Format
The final answer should be a sentence and use the following format:
```json
{
    "answer": "your_generated_sentence_here"
}
```
rule
["Snowy Hydro owns a 300 MW gas-fired power station in Valley, a 320 MW gas-fired power station at Laverton North, and a 667 MW gas-fired power station at Colongra."]