Parse this person name:

Margret Jäntsch (1314-1379, flourished 1342-1352)
user
first_name: Margret
last_name: Jäntsch
middle_names: []
temporal:
- start: 1314
  end: 1379
  type: life_span
- start: 1342
  end: 1352
  type: flourished
titles: []
extra_info: []
assistant