input: Write a function to identify the words that contain more than one vowel in a given sentence. If a word contains two or more vowels, it should be included in the output list. If the sentence is empty, return an empty list.
  assert multi_vowel_words("The quick brown fox jumped over the lazy dog.")==['quick', 'brown', 'jumped', 'over', 'lazy']
  assert multi_vowel_words("The yellow bird sings.")==['yellow', 'bird', 'sings']
  assert multi_vowel_words("Python is fun.")==['fun']
  assert multi_vowel_words("")==[]
output: def multi_vowel_words(sentence):
      vowels = "aeiouAEIOU"
      result = []
      for word in sentence.split():
          vowel_count = sum(1 for char in word if char in vowels)
          if vowel_count > 1:
              result.append(word)
      return result