Question: Of the sovereign states that have the basic government form of a unitary state, which is largest  in area?
Choices:
Ireland
East Timor
Kiribati
Cambodia
Syria
Switzerland
Afghanistan
Weimar Republic
United Kingdom
Bhutan
Answer: Afghanistan
SPARQL: SELECT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "sovereign state" . ?e <basic_form_of_government> ?e_1 . ?e_1 <pred:name> "unitary state" .  ?e <area> ?pv . ?pv <pred:value> ?v .  } ORDER BY DESC(?v) LIMIT 1
Program:
function: Find
inputs: unitary state
function: Relate
dependencies: 0
inputs: basic form of government
backward
function: FilterConcept
dependencies: 1
inputs: sovereign state
function: SelectAmong
dependencies: 2
inputs: area
largest