Parse this person name:

Sjoerd Janssens, 1373-1452, flourished 1390-1406
user
first_name: Sjoerd
last_name: Janssens
middle_names: []
temporal:
- start: 1373
  end: 1452
  type: life_span
- start: 1390
  end: 1406
  type: flourished
titles: []
extra_info: []
assistant