{
  "TragedyDegree": 2,
  "ComedyDegree": 7
}

**Explanation:**

1. **Tragedy Degree: 2**
   The story contains minimal tragic elements. The only potential source of conflict is Mr. Hewitt's skepticism, but it is quickly resolved without causing significant emotional distress. Clara faces no major setbacks or losses, resulting in a low level of tragedy.

2. **Comedy Degree: 7**
   The story leans towards a positive and uplifting tone. Clara's triumph is inspiring, and the ending is extremely happy as her invention receives government support, promising widespread access to clean water. While not comedic in a laugh-out-loud sense, it provides emotional delight and satisfaction, justifying a higher score on the comedy scale.
