Parse this person name:

Tracy Nelson, 1219-1284, flourished 1249-1274
user
first_name: Tracy
last_name: Nelson
middle_names: []
temporal:
- start: 1219
  end: 1284
  type: life_span
- start: 1249
  end: 1274
  type: flourished
titles: []
extra_info: []
assistant