Question: When did the historical country that is Milan's country (which is the twinned administrative body of Sofia) begin?
Choices:
1739-02-20
1932
1920-01-01
1895
1776-09-06
1805-03-17
1187
1921-05-12
1816
1808-02-13
Answer: 1805-03-17
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "historical country" . ?e_1 <country> ?e . ?e_1 <pred:name> "Milan" . ?e_2 <twinned_administrative_body> ?e_1 . ?e_2 <pred:name> "Sofia" .  ?e <inception> ?pv .  }
Program:
function: Find
inputs: Sofia
function: Relate
dependencies: 0
inputs: twinned administrative body
forward
function: Find
inputs: Milan
function: And
dependencies: 1
2
function: Relate
dependencies: 3
inputs: country
forward
function: FilterConcept
dependencies: 4
inputs: historical country
function: QueryAttr
dependencies: 5
inputs: inception