Question: Of Maryland counties in the Washington metro area, which has the lowest water area percentage?
Choices: Charles County
Allegany County
Frederick County
Montgomery County
Harford County
Prince George's County
Kent County
Cecil County
Carroll County
Howard County
SPARQL: SELECT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "county of Maryland" . ?e <part_of> ?e_1 . ?e_1 <pred:name> "Washington metropolitan area" .  ?e <water_as_percent_of_area> ?pv . ?pv <pred:value> ?v .  } ORDER BY ?v LIMIT 1
Program:
function: Find
inputs: Washington metropolitan area
function: Relate
dependencies: 0
inputs: part of
backward
function: FilterConcept
dependencies: 1
inputs: county of Maryland
function: SelectAmong
dependencies: 2
inputs: water as percent of area
smallest
Answer: Prince George's County