Complex sentence: Dominic Buxton was born in London, England on 8 July 1999, and retains both British and German citizenship, he mentioned in a speech at the 2017 Liberal Democrats Spring Conference.
Split into simpler sentences: Dominic Buxton was born in London, England on 8 July 1999. Buxton retains both British and German citizenship, he mentioned in a speech at the 2017 Liberal Democrats Spring Conference.