Parse this person name:

Brian Johnson (1268-1346, flourished 1283-1309)
user
first_name: Brian
last_name: Johnson
middle_names: []
temporal:
- start: 1268
  end: 1346
  type: life_span
- start: 1283
  end: 1309
  type: flourished
titles: []
extra_info: []
assistant