Parse this person name:

Tycho de Graaf (1374-1432, flourished 1394-1407)
user
first_name: Tycho
last_name: de Graaf
middle_names: []
temporal:
- start: 1374
  end: 1432
  type: life_span
- start: 1394
  end: 1407
  type: flourished
titles: []
extra_info: []
assistant