Question: Which has the largest watershed area among the rivers whose watershed area is greater than 1500000 square kilometres?
Choices: Rhine
Columbia River
Mississippi River
Amazon
River Thames
Ohio River
Danube
Missouri River
Alexander the Great
Hudson 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 > "1500000"^^xsd:double ) . ?e <watershed_area> ?pv . ?pv <pred:value> ?v .  } ORDER BY DESC(?v) LIMIT 1
Program:
function: FindAll
function: FilterNum
dependencies: 0
inputs: watershed area
1500000 square kilometre
>
function: FilterConcept
dependencies: 1
inputs: river
function: SelectAmong
dependencies: 2
inputs: watershed area
largest
Answer: Amazon