Ontology Development Exercises

Before trying these exercises, go through the basic tutorial Tutorial:_Ontology_Development. All the exercises add some new features to the ontology.

Exercise 1: Release year

Make it possible to give the release year of a movie. Add the following data to the movie library:

• Casino Royale, 2006
• 007 Quantum of Solace, 2008
• Golden Eye, 1995
• Die Another Day, 2002
• Dr. No, 1962
• The World Is Not Enough, 1999

Exercise 2: MovieInfo template

Create a template MovieInfo that lets you write:

ML.t0381061
    @MO.MovieInfo "Casino Royale” ML.MartinCambell 2006
    @MO.Casting db.JamesBond ML.DanielCraig 

Exercise 3: Genres

• Add type Genre to Movie ontology. It inherits Type.
• Add types Action, Drama and Western to Movie ontology. These types inherit Movie and are instances of Genre.

mo.Drama <T mo.Movie : mo.Genre

• Let all movies in MovieLibrary to be instances of Action genre.

Exercise 4: Subtitles

Add a data type for subtitles to Movie ontology and make it possible to add subtitles to a movie in the following way:

ML.tt0110912 : MO.Movie
    MO.HasTitle "Pulp Fiction"
    MO.HasSubtitles    
        [ {begin=29.516, end=31.916, text=”Forget it. It's too risky.”},
          {begin=31.956, end=33.476, text=”I'm through doing that shit.”}}
        ] : MO.Subtitles

See Datatype documentation for reference about data types. Examples about literal types can be found in Layer0Literals.pgraph.

Exercise 5: Awards

Add the concept of awards to Movie ontology so that following kind of information can be added to MovieLibrary:

• Daniel Craig won Empire Award in category Best Actor in 2006 for Casino Royale.

Note, that there are more than one ways to define the concept.