Where can I find out who lives at a given address?

In order to explain how Temporal Databases work, we need a short biography of John Doe. John Doe was born on April 3rd, 1975 in the Kids Hospital of Medicine County, as son of Jack Doe and Jane Don't who lived in Smallville. Jack Doe proudly registered the birth of his first-born on April 4th, 1975 at the Smallville City Hall. John grew up as a joyful boy, turned out to be a brilliant student and graduated with honors in 1993. After graduation he went to live on his own in Bigtown. Although he moved out on August 26th, 1994, he forgot to register the change of address officially. It was only at the turn of the seasons that his mother reminded him that he had to register, which he did a few days later on December 27, 1994. Although John had a promising future, his story ends tragically. John Doe was accidentally hit by a truck on April 1st, 2001. The coroner reported his date of death on the very same day.