In a circle, there is a diameter, there is also a term for half of the diameter, what is this mathematical term called?
In the dining room, there is a silver vase in the center of the table, what color(s) are the flowers in it?
What is the name of the man who is being controlled by the pure evil power of Opophis, and has greatly influenced the decisions of Michel Desjardins?
What is Vladimir Menshikov
On a graph, there are 4 quadrants. Which quadrant is quadrant 2? (EX: bottom right, top left, etc.)

What is the wood that the second tri wizard champion's wand is made out of? Fleur Delecour.
What is the name of the Death Eater who's head fell through the glass in the department of mysteries and who's head turned into a babies?