Parse this person name:

Jennifer Johnson (1216-1261, flourished 1236-1256)
user
first_name: Jennifer
last_name: Johnson
middle_names: []
temporal:
- start: 1216
  end: 1261
  type: life_span
- start: 1236
  end: 1256
  type: flourished
titles: []
extra_info: []
assistant