Parse this person name:

Henry West (1938-1986, flourished 1956-1981)
user
first_name: Henry
last_name: West
middle_names: []
temporal:
- start: 1938
  end: 1986
  type: life_span
- start: 1956
  end: 1981
  type: flourished
titles: []
extra_info: []
assistant