Parse this person name:

Duane Liu, 1411-1472, flourished 1440-1454
user
first_name: Duane
last_name: Liu
middle_names: []
temporal:
- start: 1411
  end: 1472
  type: life_span
- start: 1440
  end: 1454
  type: flourished
titles: []
extra_info: []
assistant