Generate a valid JSON string from data provided
Name: John, Age: 25
```json
{
   "Name": "John",
   "Age": 25
}
```
Complete the following task based on the instruction and optional input provided.### Instruction:
Generate a valid JSON string from data provided

### Input:
Name: John, Age: 25

### Output:
```json
{
   "Name": "John",
   "Age": 25
}
```