Parse this person name:

Gerda Langern, 1270-1343, flourished 1298-1309
user
first_name: Gerda
last_name: Langern
middle_names: []
temporal:
- start: 1270
  end: 1343
  type: life_span
- start: 1298
  end: 1309
  type: flourished
titles: []
extra_info: []
assistant