Parse this person name:

Sarah Walker (1441-1506, flourished 1469-1496)
user
first_name: Sarah
last_name: Walker
middle_names: []
temporal:
- start: 1441
  end: 1506
  type: life_span
- start: 1469
  end: 1496
  type: flourished
titles: []
extra_info: []
assistant