Parse this person name:

Eric Seifert, 1263-1327, flourished 1285-1308
user
first_name: Eric
last_name: Seifert
middle_names: []
temporal:
- start: 1263
  end: 1327
  type: life_span
- start: 1285
  end: 1308
  type: flourished
titles: []
extra_info: []
assistant