Simplify the following text for a Grade 7 native English-speaking person.
Original: Helmut Fink ( born 18 March 1901 -- 27 April 2009 ) was the last known German Revolution veteran and the last German WWI-Era veteran in the world .
Simplified: Helmut Fink ( born 18 March 1901 ) is the last living verified German World War I veteran .