Fun with words: What does expost facto mean?

Questions

in romeo and juliet, who gave a long monologue about queen mab?

in roulette, what number is green?

in rugby, what is the equivalent of a hockey face-off?

in september of 1994, 852 people died when the ferry estonia sank in what sea?

in showjumping, how many points are incurred for knocking down a fence?