Parse this person name:

Elwira Mentzel, 1921-1990, flourished 1937-1965
user
first_name: Elwira
last_name: Mentzel
middle_names: []
temporal:
- start: 1921
  end: 1990
  type: life_span
- start: 1937
  end: 1965
  type: flourished
titles: []
extra_info: []
assistant