Question: Which agent uses German as the official language?
Choices:
World Bank
Austria-Hungary
African Development Bank
Union of European Football Associations
Lucerne
Forbes
Weimar Republic
canton of Bern
KLM
World Trade Organization
Answer: Union of European Football Associations
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "agent" . ?e <official_language> ?e_1 . ?e_1 <pred:name> "German" .   }
Program:
function: Find
inputs: German
function: Relate
dependencies: 0
inputs: official language
backward
function: FilterConcept
dependencies: 1
inputs: agent
function: What
dependencies: 2