Simplify the following text for a Grade 9 native English-speaking person.
Original: Florence Beatrice Green ( nÃ e Patterson ) ( born 19 February 1901 ) , at age , is the last known female veteran of the First World War , and one of the last two confirmed veterans of either gender .
Simplified: Florence Green ( born 19 February 1901 ) is one of the last surviving veterans of World War I and the last female veteran .