Question: What is the official language of Joseon ?
Choices:
Yiddish
Korean
Hebrew
Malayalam
Filipino
Cherokee
Romanian
Scots
German
Irish
Answer: Korean
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "language" . ?e_1 <official_language> ?e . ?e_1 <pred:name> "Joseon" .   }
Program:
function: Find
inputs: Joseon
function: Relate
dependencies: 0
inputs: official language
forward
function: FilterConcept
dependencies: 1
inputs: language
function: What
dependencies: 2