The main difference between scene types is the number of Change tokens each role gets. This will influence the story and how it progresses, as each role gets varying levels of narrative authority.
For example questions, I think a good scene framing question will point the story in an interesting direction but not be so constrained that there's only one answer. A good question is something like "Why does Sir Alphard, last of his line, betray his oath that he gave to his mother on her deathbed?" This gives us a clear direction to play toward (breaking the oath) but a lot of flexibility in how that happens. (We may have a lot of flexibility if this oath has never been established in the fiction before, and we have to define that oath as well as break it.)
The overall story is one of beautiful tragedy and the downfall of the Knights, so anything that builds int hat direction would be good: "What makes the demon so appealing or tempting to the Knight?" or "How is the last great work of the glass sculptors of Polaris finally destroyed?" or "Upon the knight return from their long exile in the wilderness, how do they find the city has changed?"
To a big extent, these questions are up to the players, so that they can guide the story in directions they are interested in it going. (It probably also would help to read the original game Polaris to capture the tone and feel of the setting. Then try to imagine scenes and actions from that game, and use the scene framing questions to help move the game in those directions.)