Parse this person name:

Sebastian Klemm (1348-1421, flourished 1373-1387)
user
first_name: Sebastian
last_name: Klemm
middle_names: []
temporal:
- start: 1348
  end: 1421
  type: life_span
- start: 1373
  end: 1387
  type: flourished
titles: []
extra_info: []
assistant