Parse this person name:

Lex Mulder (1216-1271, flourished 1245-1263)
user
first_name: Lex
last_name: Mulder
middle_names: []
temporal:
- start: 1216
  end: 1271
  type: life_span
- start: 1245
  end: 1263
  type: flourished
titles: []
extra_info: []
assistant