Question: Which has the smallest area among the North Carolina counties whose population is less than 470000?
Choices: Buncombe County
Cumberland County
Wake County
Franklin County
Polk County
Mecklenburg County
Davidson County
Guilford County
Madison County
Brunswick County
SPARQL: SELECT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "county of North Carolina" . ?e <population> ?pv_1 . ?pv_1 <pred:unit> "1" . ?pv_1 <pred:value> ?v_1 . FILTER ( ?v_1 < "470000"^^xsd:double ) . ?e <area> ?pv . ?pv <pred:value> ?v .  } ORDER BY ?v LIMIT 1
Program:
function: FindAll
function: FilterNum
dependencies: 0
inputs: population
470000
<
function: FilterConcept
dependencies: 1
inputs: county of North Carolina
function: SelectAmong
dependencies: 2
inputs: area
smallest
Answer: Polk County