Parse this person name:

Franck Léger (1248-1290, flourished 1270-1285)
user
first_name: Franck
last_name: Léger
middle_names: []
temporal:
- start: 1248
  end: 1290
  type: life_span
- start: 1270
  end: 1285
  type: flourished
titles: []
extra_info: []
assistant