Parse this person name:

Karen Burton, 1272-1326, flourished 1287-1316
user
first_name: Karen
last_name: Burton
middle_names: []
temporal:
- start: 1272
  end: 1326
  type: life_span
- start: 1287
  end: 1316
  type: flourished
titles: []
extra_info: []
assistant