Question: Which capital established prior to 500 AD is lowest in elevation?
Choices:
Yerevan
Moscow
Strasbourg
Paris
Zürich
Kiev
Nanjing
Rome
Lausanne
Istanbul
Program:
function: FindAll
function: FilterYear
dependencies: 0
inputs: inception
500
<
function: FilterConcept
dependencies: 1
inputs: capital
function: SelectAmong
dependencies: 2
inputs: elevation above sea level
smallest
SPARQL: SELECT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "capital" . ?e <inception> ?pv_1 . ?pv_1 <pred:year> ?v_1 . FILTER ( ?v_1 < 500 ) . ?e <elevation_above_sea_level> ?pv . ?pv <pred:value> ?v .  } ORDER BY ?v LIMIT 1
Answer: Nanjing