Parse this person name:

Sydney Gray (1328-1385, flourished 1355-1379)
user
first_name: Sydney
last_name: Gray
middle_names: []
temporal:
- start: 1328
  end: 1385
  type: life_span
- start: 1355
  end: 1379
  type: flourished
titles: []
extra_info: []
assistant