Death of a friend
You've just found out that your classmate from school was one of those killed in the attack on World trade Centre some years ago. You rack your brains to remember every detail about her. She was dark, thin, of average height. Did she wear glasses? Probably. You do recall her voice. Nasal. Nothing singularly remarkable to deserve such a high-profile death, you think. But the next time September 11th events are mentioned, you say 'I used to know someone who died in the attacks. We were such good friends'.