Parse this person name:

Ema Rivas (1427-1490, flourished 1454-1472)
user
first_name: Ema
last_name: Rivas
middle_names: []
temporal:
- start: 1427
  end: 1490
  type: life_span
- start: 1454
  end: 1472
  type: flourished
titles: []
extra_info: []
assistant