Parse this person name:

Berat Mens (1890-1954, flourished 1920-1931)
user
first_name: Berat
last_name: Mens
middle_names: []
temporal:
- start: 1890
  end: 1954
  type: life_span
- start: 1920
  end: 1931
  type: flourished
titles: []
extra_info: []
assistant