Read this and answer the question. If the question is unanswerable, say "unanswerable".

Between 1042 and 1052 King Edward the Confessor began rebuilding St Peter's Abbey to provide himself with a royal burial church. It was the first church in England built in the Romanesque style. The building was not completed until around 1090 but was consecrated on 28 December 1065, only a week before Edward's death on 5 January 1066. A week later he was buried in the church, and nine years later his wife Edith was buried alongside him. His successor, Harold II, was probably crowned in the abbey, although the first documented coronation is that of William the Conqueror later the same year.

What was the date of the Abbey's demolition?
unanswerable