Parse this person name:

Ravi Walter, 1419-1482, flourished 1441-1459
user
first_name: Ravi
last_name: Walter
middle_names: []
temporal:
- start: 1419
  end: 1482
  type: life_span
- start: 1441
  end: 1459
  type: flourished
titles: []
extra_info: []
assistant