Parse this person name:

April Rivera (1221-1297, flourished 1248-1273)
user
first_name: April
last_name: Rivera
middle_names: []
temporal:
- start: 1221
  end: 1297
  type: life_span
- start: 1248
  end: 1273
  type: flourished
titles: []
extra_info: []
assistant