Parse this person name:

Geert Beyer (1413-1488, flourished 1433-1451)
user
first_name: Geert
last_name: Beyer
middle_names: []
temporal:
- start: 1413
  end: 1488
  type: life_span
- start: 1433
  end: 1451
  type: flourished
titles: []
extra_info: []
assistant