Based on prior knowledge, there might be a relationship between sex and heart disease. Research suggests that there are differences in the prevalence and presentation of heart disease between males and females. Therefore, it is worth investigating the relationship between sex and coronary angiography results.

After analyzing the data, the following dictionary can be generated:

```json
{
	"no": ["M","F"],  
	"yes": ["M","F"]
}
```

In this case, both categories of sex ("M" and "F") are relevant to both the "no" (no heart disease) and "yes" (heart disease present) categories. Hence, both categories should be included in the dictionary.