Parse this person name:

William Poulain, 1537-1611, flourished 1556-1578
user
first_name: William
last_name: Poulain
middle_names: []
temporal:
- start: 1537
  end: 1611
  type: life_span
- start: 1556
  end: 1578
  type: flourished
titles: []
extra_info: []
assistant