Parse this person name:

Ronald Ferguson (1250-1308, flourished 1275-1298)
user
first_name: Ronald
last_name: Ferguson
middle_names: []
temporal:
- start: 1250
  end: 1308
  type: life_span
- start: 1275
  end: 1298
  type: flourished
titles: []
extra_info: []
assistant