Parse this person name:

Mathias Seifert (1289-1353, flourished 1311-1338)
user
first_name: Mathias
last_name: Seifert
middle_names: []
temporal:
- start: 1289
  end: 1353
  type: life_span
- start: 1311
  end: 1338
  type: flourished
titles: []
extra_info: []
assistant