Parse this person name:

Sil Geerling-de Bock (1249-1296, flourished 1268-1287)
user
first_name: Sil
last_name: Geerling-de Bock
middle_names: []
temporal:
- start: 1249
  end: 1296
  type: life_span
- start: 1268
  end: 1287
  type: flourished
titles: []
extra_info: []
assistant