Parse this person name:

Robin Koeman, 1226-1285, flourished 1252-1280
user
first_name: Robin
last_name: Koeman
middle_names: []
temporal:
- start: 1226
  end: 1285
  type: life_span
- start: 1252
  end: 1280
  type: flourished
titles: []
extra_info: []
assistant