Question: How is Christopher Columbus (the one whose publication date is 1923-01-01) related to Germany?
Choices: stated in
medical treatment
military branch
league
performer
country of origin
cast member
member of sports team
home world
tributary
SPARQL: SELECT DISTINCT ?p WHERE { ?e_1 <pred:name> "Christopher Columbus" . ?e_1 <publication_date> ?pv . ?pv <pred:date> "1923-01-01"^^xsd:date . ?e_2 <pred:name> "Germany" . ?e_1 ?p ?e_2 .  }
Program:
function: Find
inputs: Christopher Columbus
function: FilterDate
dependencies: 0
inputs: publication date
1923-01-01
=
function: Find
inputs: Germany
function: QueryRelation
dependencies: 1
2
Answer: country of origin