Based on prior knowledge, fasting blood sugar levels can be used as an indicator of heart disease. Elevated fasting blood sugar levels (>120 mg/dl) are associated with a higher likelihood of heart disease.

To analyze the relationship between the feature "FastingBS" and the target variable (heart disease), we need to examine the distribution of fasting blood sugar levels for each target class ('no' and 'yes').

Based on the analysis, here is the dictionary:

```json
{
    "no": [95.0, 98.0, 100.0, 104.0, 107.0],
    "yes": [122.0, 130.0, 136.0, 142.0, 150.0]
}
```

This dictionary contains 5 typical fasting blood sugar values for each target class ('no' and 'yes'). The values associated with the 'no' class range around 95-107 mg/dl, while the values associated with the 'yes' class range around 122-150 mg/dl. Note that these values are just examples based on a hypothetical scenario. The actual values may vary depending on the dataset and analysis.