Parse this person name:

Pierre Dehmel (1397-1456, flourished 1419-1447)
user
first_name: Pierre
last_name: Dehmel
middle_names: []
temporal:
- start: 1397
  end: 1456
  type: life_span
- start: 1419
  end: 1447
  type: flourished
titles: []
extra_info: []
assistant