input: Write a python function to find the longest word in a given text.
  assert find_longest_word('The quick brown fox jumps over the lazy dog') == 'jumps'
  assert find_longest_word('Python programming is fun') == 'programming'
  assert find_longest_word('To be or not to be, that is the question') == 'question'
output: def find_longest_word(text):
      words = text.split()
      longest_word = max(words, key=len)
      return longest_word