You ask the professor where he was when the plans were stolen. He says he was in the lounge reading a book. You ask, "What kind of book?"
He replies, "A fantasy book."
You ask, "What was the book called?"
He thinks for a few seconds then he says, "The journey of John Abba."
You say, "Can I see it?"
He says, "I can't remember where I put it."
You say, "What's the author's name?"
He replies, "I didn't look at the author's name."