Parse this person name:

Lukas Elsemulder, 1249-1301, flourished 1271-1291
user
first_name: Lukas
last_name: Elsemulder
middle_names: []
temporal:
- start: 1249
  end: 1301
  type: life_span
- start: 1271
  end: 1291
  type: flourished
titles: []
extra_info: []
assistant