Parse this person name:

Benjamin Brown (1213-1278, flourished 1240-1260)
user
first_name: Benjamin
last_name: Brown
middle_names: []
temporal:
- start: 1213
  end: 1278
  type: life_span
- start: 1240
  end: 1260
  type: flourished
titles: []
extra_info: []
assistant