Parse this person name:

Lex Steinmeiern, 1536-1581, flourished 1564-1576
user
first_name: Lex
last_name: Steinmeiern
middle_names: []
temporal:
- start: 1536
  end: 1581
  type: life_span
- start: 1564
  end: 1576
  type: flourished
titles: []
extra_info: []
assistant