```json
{
  "TragedyDegree": 1,
  "ComedyDegree": 5
}
```

Explanation:
- **Tragedy Degree**: The story contains almost no tragic elements. While there is a brief mention of Nina feeling a pang of longing for simpler times, it is minor and quickly dismissed. The narrative is generally positive and inspiring, focusing on innovation and creativity.
- **Comedy Degree**: The story features light-hearted moments, such as the game of tag among children and the playful argument over a game of tug-of-war. These elements contribute to a relatively light-hearted atmosphere, though the story does not have an extremely happy ending nor strong comedic aspects. Therefore, this scores a moderate 5 for Comedy Degree.
