input: from typing import Dict
  
  def list_to_dict(items: list) -> Dict[int, str]:
      """
      Converts a given list of integers into a dictionary where keys are the integers
      and values are their corresponding string representations (in words).
      
      >>> list_to_dict([1, 2, 3, 4])
      {1: 'one', 2: 'two', 3: 'three', 4: 'four'}
      >>> list_to_dict([5, 6, 7])
      {5: 'five', 6: 'six', 7: 'seven'}
      """
      number_to_word = {1: 'one', 2: 'two', 3: 'three', 4: 'four', 5: 'five', 6: 'six', 7: 'seven'}
      return {item: number_to_word.get(item, 'unknown') for item in items}
output:     number_to_word = {1: 'one', 2: 'two', 3: 'three', 4: 'four', 5: 'five', 6: 'six', 7: 'seven'}
      return {item: number_to_word.get(item, 'unknown') for item in items}