Parse this person name:

Falk Jähn (1246-1319, flourished 1272-1291)
user
first_name: Falk
last_name: Jähn
middle_names: []
temporal:
- start: 1246
  end: 1319
  type: life_span
- start: 1272
  end: 1291
  type: flourished
titles: []
extra_info: []
assistant