Parse this person name:

Senna van den Pol, 1234-1293, flourished 1262-1278
user
first_name: Senna
last_name: van den Pol
middle_names: []
temporal:
- start: 1234
  end: 1293
  type: life_span
- start: 1262
  end: 1278
  type: flourished
titles: []
extra_info: []
assistant