input: def get_word_lists(strings):
      """Generates a list of lists of words from the given list of strings. Each inner list 
      contains the first word of the string followed by the following words in the string.
  
      >>> get_word_lists(["Hello world", "This is a test"])
      [["Hello", "world"], ["This", "is", "a", "test"]]
      """
output:     word_lists = []
      for string in strings:
          words = string.split()
          if len(words) > 0:
              word_lists.append([words[0]] + words[1:])
      return word_lists