Mafia 112. Pirates of the HW Sea

How can there be no information? Reread Day Zero, analyze the personalities of those involved, and put one and one together. You have three options:
1. Nebo motivated his teammates to kill Yashur.
2. Someone framed him (who?).
3. Yashur was chosen randomly (who?).
Which of these options is most likely?

1. I don't have enough free time to reread the entire thread and all the chatter in it (I already went through all the questionnaires twice trying to find clues, which made my eyes hurt, although it was pointless because I'm not a detective). Of the "conflicts" between this pair, I only saw them haggling over Battle Dungeons, where Yashur was stingy and didn't give Nebo a bird for his efforts. If there's something specific, you can send me a post and tell me where I should start reading.
2. For example, you, in order to build a strange and incomprehensible theory in a beautiful and smooth way.
3. Anyone, really. Personally, for ethical reasons, I would try to dissuade the team from killing their former teammates on the first night. I sincerely hope that Ment did too, although I don't like how readily he decided to execute Nebo almost on a whim. His arguments: you are Cotton, and the probability of exposing Prikhlop-Nebo has worked. Either he's naive, or he's a mafia member who messed up like last time when he tried to execute someone based on Nebo's trolling.