From RDF datasets to Question Answering

In this tutorial we are going to make a Question Answering (QA) system on top of a KG!

You can either take your own RDF dataset (take a small one, or a snippet < 10MB) or this one here about cocktails. Here are some lines extracted from the cocktail KB and describing a cocktail called "Margarita" or "Upside Down Margarita". Moreover the snippet contains the information that the cocktails contains "Cointreau", "Tequila" and "Lime juice":

PREFIX vsw: <http://vocabulary.semantic-web.at/cocktails>
PREFIX vswo: <http://vocabulary.semantic-web.at/cocktail-ontology>
PREFIX schema: <http://schema.org/>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>

vsw:2d85fb1b-96cb-4c48-8df5-707032f34e71  rdf:type vswo:Cocktail ;
                                          rdfs:label   "Margarita"@en ;
                                          rdfs:label   "Upside Down Margarita"@en ;
                                          schema:description "The margarita is a Mexican cocktail consisting of tequila mixed with Cointreau or similar orange-flavoured liqueur and lime or lemon juice, often served with salt on the glass rim. It is the most common tequila-based cocktail in the United States. The drink is served shaken with ice (on the rocks), blended with ice (frozen margarita), or without ice (straight up)."@en ;
                                          vswo:consists-of vsw:1439e6c3-a155-4c80-8a5d-723453b4d17e ;
                                          vswo:consists-of vsw:7dede323-e986-4417-b723-c9c7a7fe82ba ;
                                          vswo:consists-of vsw:88f5de3d-3de4-4a2f-9523-50bc7bb06600 .
vswo:Cocktail                             rdfs:label "Cocktail"@en .
vsw:1439e6c3-a155-4c80-8a5d-723453b4d17e  rdfs:label "Cointreau"@en .
vsw:7dede323-e986-4417-b723-c9c7a7fe82ba  rdfs:label "Tequila"@en .
vsw:88f5de3d-3de4-4a2f-9523-50bc7bb06600  rdfs:label "Lime juice"@en .
vswo:consists-of                          rdfs:label "consists of"@en ;
                                          rdfs:label "contains"@en ;
                                          rdfs:label "made up"@en ;
                                          rdfs:label "ingredients"@en .

This RDF snippet would allow to answer the following questions:

- What are the ingredients of Margarita? -> Cointreau, Tequila, Lime juice
- What is Margarita made of? -> Cointreau, Tequilla, Lime juice
- The ingredients of Margarita are what? -> Cointreau, Tequila, Lime juice
- ingredients margarita? -> Cointreau, Tequila, Lime juice
- What is Margarita? -> The margarita is a Mexican cocktail consisting of tequila mixed with Cointreau or similar orange-flavoured liqueur and lime or lemon juice, often served with salt on the glass rim. It is the most common tequila-based cocktail in the United States. The drink is served shaken with ice (on the rocks), blended with ice (frozen margarita), or without ice (straight up)."@en .
- Margarita cocktail? -> The margarita is a Mexican cocktail consisting of tequila mixed with Cointreau or similar orange-flavoured liqueur and lime or lemon juice, often served with salt on the glass rim. It is the most common tequila-based cocktail in the United States. The drink is served shaken with ice (on the rocks), blended with ice (frozen margarita), or without ice (straight up)."@en .
- Give me cocktails containing tequila. -> Margarita
- Which cocktails have as ingredient Cointreau? -> Margarita
- cocktails containing tequilla and cointreau -> Margarita

and variations of these questions.

What we want to achieve at the end of this tutorial looks like this:

and