Mafia 102. Veliria

I didn't understand anything; can you explain it in detail, starting from the beginning? Something like this:
"If this person has a town role, and this person has a mafia role, then it's beneficial for this person to do this and that, and they will likely implement it in this way and that way, considering what they did before. But if the situation is different, namely..."
And so on.

The Master suspected Jaconda based on the questioning. Then, he suddenly switched to Heroist based on a clue. I thought this was a disagreement between the Master and Jaconda, but based on the night's results, I'm more confident that the mafia either decided that the Master was a journalist or a gunslinger and left Jaconda for later. In any case, they killed the Master so that he wouldn't return with suspicions about Jaconda. Yaschur refuses to acknowledge anyone other than a gunslinger in Jaconda, which is quite strange – either Yaschur has figured out the clue, or he's fabricating arguments. Thus, Jaconda-mafia ties in with Yaschur-mafia. At the same time, she ties in with Uranus due to some coincidences in the questioning and their overall behavior towards each other. The problem is that Uranus and Yaschur cannot be mafia members simultaneously. Therefore, I agree to execute one of these three to determine the roles of the remaining two.