Question: In terms of the states existing at the lowest spots in the Caribbean Sea, which one has the lowest mains voltage?
Choices: Kosovo
Cuba
Tajikistan
Finland
Grenada
Saint Vincent and the Grenadines
Fiji
Trinidad and Tobago
Jamaica
Antigua and Barbuda
SPARQL: SELECT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "state" . ?e <lowest_point> ?e_1 . ?e_1 <pred:name> "Caribbean Sea" .  ?e <mains_voltage> ?pv . ?pv <pred:value> ?v .  } ORDER BY ?v LIMIT 1
Program:
function: Find
inputs: Caribbean Sea
function: Relate
dependencies: 0
inputs: lowest point
backward
function: FilterConcept
dependencies: 1
inputs: state
function: SelectAmong
dependencies: 2
inputs: mains voltage
smallest
Answer: Cuba