Parse this person name:

Urban Geisler, 1437-1489, flourished 1452-1470
user
first_name: Urban
last_name: Geisler
middle_names: []
temporal:
- start: 1437
  end: 1489
  type: life_span
- start: 1452
  end: 1470
  type: flourished
titles: []
extra_info: []
assistant