Parse this person name:

Valerie Powell, 1742-1798, flourished 1770-1782
user
first_name: Valerie
last_name: Powell
middle_names: []
temporal:
- start: 1742
  end: 1798
  type: life_span
- start: 1770
  end: 1782
  type: flourished
titles: []
extra_info: []
assistant