input: Write a python function to split a sentence into words, sort them alphabetically, and return the sorted list.
  assert sort_sentence("The quick brown fox jumped over the lazy dog.") == ['brown', 'dog.', 'fox', 'jumped', 'lazy', 'over', 'quick', 'The', 'the']
  assert sort_sentence("hello world this is a test") == ['a', 'hello', 'is', 'test', 'this', 'world']
  assert sort_sentence("Python coding is fun") == ['Python', 'coding', 'fun', 'is']
output: def sort_sentence(sentence):
      words = sentence.split()
      return sorted(words)