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Poll: Does she have a gift? Can she kill people? Is she peaceful?
Jaconda's answers: Yes/Yes/No. Only James from the villagers has a gift and can "kill people."
I'll start with this statement. Let me remind you that one answer in the poll is false, in case you've forgotten.
So, let's assume you correctly guessed the questions asked to Jaconda.
If she lied on the first question, she's not playing for a town, she can kill, and she doesn't have a gift: a maniac, Logfire, Ori (maybe).
If she lied on the second question, she's not playing for a town, she can't kill, but she has a gift: Cat, Edward, Simon (now deceased).
If she lied on the third question, she's playing for a town, she can kill, and she has a gift: indeed, it's James.
So, she might be Mafia, but most likely not. I said Jaconda is a villager? No, I'm just not ready to execute her yet. Because we need not only James, but also a maniac and a cat to defeat the Mafia.
So, Yaschur. I think you analyzed her poll very strangely, too superficially.