Parse this person name:

Mark Young (1889-1948, flourished 1910-1929)
user
first_name: Mark
last_name: Young
middle_names: []
temporal:
- start: 1889
  end: 1948
  type: life_span
- start: 1910
  end: 1929
  type: flourished
titles: []
extra_info: []
assistant