Question: Does Iconclass notation 49E21 apply to the urban rail transit whose OSM tag or key is Tag:railway=subway?
Choices: yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
SPARQL: ASK { ?e <pred:instance_of> ?c . ?c <pred:name> "urban rail transit" . ?e <OSM_tag_or_key> ?pv_1 . ?pv_1 <pred:value> "Tag:railway=subway" . ?e <Iconclass_notation> ?pv . ?pv <pred:value> "49E21" .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: OSM tag or key
Tag:railway=subway
function: FilterConcept
dependencies: 1
inputs: urban rail transit
function: QueryAttr
dependencies: 2
inputs: Iconclass notation
function: VerifyStr
dependencies: 3
inputs: 49E21
Answer: no