answer: The professor shows #Person1# Canada, Mexico, Connecticut, Ohio, Los Angeles, Boston, and Las Vegas on the map.
documents: #Person1#: Professor, where's Canada?
  #Person2#: Canada is north of here.
  #Person1#: Can you show me on the map?
  #Person2#: Sure. Look here. Canada is north of the United States.
  #Person1#: Oh, I see. Where's Mexico?
  #Person2#: Mexico is south of the United States.
  #Person1#: How about Connecticut? Where's that?
  #Person2#: Connecticut is east of New York.
  #Person1#: What state is west of Pennsylvania?
  #Person2#: Ohio.
  #Person1#: OK, Where's Los Angeles?
  #Person2#: Los Angeles is in California. It's southeast of San Francisco.
  #Person1#: Where's Boston.
  #Person2#: Boston is in the northeast part of the country.
  #Person1#: Where is Las Vegas?
  #Person2#: Las Vegas is in the southwest.