Parse this person name:

Jennifer Nielsen (1230-1308, flourished 1246-1268)
user
first_name: Jennifer
last_name: Nielsen
middle_names: []
temporal:
- start: 1230
  end: 1308
  type: life_span
- start: 1246
  end: 1268
  type: flourished
titles: []
extra_info: []
assistant