Harry asked, "What do you know?"
Ron asked, "What do you know?"
Hermione asked, "What do you know?"
Draco asked, "What do you know?"
Zabini asked: "What do you know?"
Snape asked, "What do you know?"
Dumbledore asked: "What do you know?"
Voldemort asked: "What do you know?"
Ginny cried and fainted in the toilet: "I really don't know anything..."