Parse this person name:

William Lewis, 1914-1969, flourished 1931-1960
user
first_name: William
last_name: Lewis
middle_names: []
temporal:
- start: 1914
  end: 1969
  type: life_span
- start: 1931
  end: 1960
  type: flourished
titles: []
extra_info: []
assistant