Question: What is the size by area of the sovereign state with the OSM tag or key is Tag:historic:period=joseon?
Choices: 33.27 square mile
1032.29 square kilometre
5586.0 square kilometre
1728 square kilometre
199729 square kilometre
922.0 square kilometre
3072 square kilometre
34022 square kilometre
3226 square kilometre
220000 square kilometre
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "sovereign state" . ?e <OSM_tag_or_key> ?pv_1 . ?pv_1 <pred:value> "Tag:historic:period=joseon" . ?e <area> ?pv .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: OSM tag or key
Tag:historic:period=joseon
function: FilterConcept
dependencies: 1
inputs: sovereign state
function: QueryAttr
dependencies: 2
inputs: area
Answer: 220000 square kilometre