Given an trivia question precisely answer the question with a word/phrase/name. External resources such as Wikipedia could be used to obtain the facts.

In the recent London Olympics where were the rowing events held?
dorney lake

Which astronomer, born in West Yorkshire, England in 1915 and dying in 2001 in Bournemouth, England, was a science fiction writer, whose output includes the novel The Black Cloud, a TV series A for Andromeda and a play Rockets in Ursa Major?
fred hoyle

Where was Expo 2010 held from 1 May to 31 October 2010, the most expensive Expo in the history of world's fairs with the largest site (5.28 square km), with more than 190 countries and over 50 international organisations participating?

shanghai