Parse this person name:

Demi Steinmeiern-Gerritse, 1379-1440, flourished 1396-1426
user
first_name: Demi
last_name: Steinmeiern-Gerritse
middle_names: []
temporal:
- start: 1379
  end: 1440
  type: life_span
- start: 1396
  end: 1426
  type: flourished
titles: []
extra_info: []
assistant