In http://guides.neo4j.com/4.0-intro-neo4j-exercises/06.html
the problem in exercise 6.3 should also mention to return the name of the movie too.
The page currently says:
Retrieve all people who reviewed a movie, returning the list of reviewers and how many reviewers reviewed the movie.
Better wording would be:
Given all people who reviewed a movie, return the name of the movie, the list of reviewer names and how many reviewers reviewed the movie.