Question: Which one of the rivers, whose watershed area is below 190,000 square kilometers, is the longest one ?
Choices: Macclesfield Town F.C.
Missouri River
Columbia River
Hudson River
River Thames
Rhine
Danube
Amazon
Ohio River
Mississippi River
SPARQL: SELECT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "river" . ?e <watershed_area> ?pv_1 . ?pv_1 <pred:unit> "square kilometre" . ?pv_1 <pred:value> ?v_1 . FILTER ( ?v_1 < "190000"^^xsd:double ) . ?e <length> ?pv . ?pv <pred:value> ?v .  } ORDER BY DESC(?v) LIMIT 1
Program:
function: FindAll
function: FilterNum
dependencies: 0
inputs: watershed area
190000 square kilometre
<
function: FilterConcept
dependencies: 1
inputs: river
function: SelectAmong
dependencies: 2
inputs: length
largest
Answer: Rhine