Parse this person name:

Lena Willemsen, 1751-1806, flourished 1772-1788
user
first_name: Lena
last_name: Willemsen
middle_names: []
temporal:
- start: 1751
  end: 1806
  type: life_span
- start: 1772
  end: 1788
  type: flourished
titles: []
extra_info: []
assistant