Parse this person name:

Alexej Jäkel, 1253-1316, flourished 1268-1280
user
first_name: Alexej
last_name: Jäkel
middle_names: []
temporal:
- start: 1253
  end: 1316
  type: life_span
- start: 1268
  end: 1280
  type: flourished
titles: []
extra_info: []
assistant