Parse this person name:

Sam Beekman (1226-1280, flourished 1250-1264)
user
first_name: Sam
last_name: Beekman
middle_names: []
temporal:
- start: 1226
  end: 1280
  type: life_span
- start: 1250
  end: 1264
  type: flourished
titles: []
extra_info: []
assistant