Parse this person name:

William Hansen, 1722-1781, flourished 1739-1760
user
first_name: William
last_name: Hansen
middle_names: []
temporal:
- start: 1722
  end: 1781
  type: life_span
- start: 1739
  end: 1760
  type: flourished
titles: []
extra_info: []
assistant