Definition: Rewrite each original sentence in order to make it easier to understand by non-native speakers of English. You can do so by replacing complex words with simpler synonyms (i.e. paraphrasing), deleting unimportant information (i.e. compression), and/or splitting a long complex sentence into several simpler ones. The final simplified sentences need to be grammatical, fluent, and retain the main ideas of their original counterparts without altering their meanings.
Input: David William Donald Cameron (born 9 October 1966) is the leader of the Conservative Party and Leader of Her Majesty's Loyal Opposition in the United Kingdom.

The leader of the Conservative Party and Her Majesty's Loyal Opposition in the United Kingdom is David William Donald Cameron (born 9 October 1966).