Question: What is the OSM tag or key for the ancient civilization which is the origin country of choir?
Choices: Tag:denomination=baptist
Tag:denomination=catholic
Tag:historic:period=joseon
Tag:sport=swimming
Tag:building=hotel
Tag:historic:civilization=ancient_greece
Tag:sport=australian_football
Key:currency:EUR
Tag:sport=chess
Key:currency:JPY
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "ancient civilization" . ?e_1 <country_of_origin> ?e . ?e_1 <pred:name> "choir" .  ?e <OSM_tag_or_key> ?pv .  }
Program:
function: Find
inputs: choir
function: Relate
dependencies: 0
inputs: country of origin
forward
function: FilterConcept
dependencies: 1
inputs: ancient civilization
function: QueryAttr
dependencies: 2
inputs: OSM tag or key
Answer: Tag:historic:civilization=ancient_greece