Question: What is the width of the landform that is a terrain feature of the Port of Spain?
Choices: 480 kilometre
80 mile
190 kilometre
53 centimetre
102 centimetre
260 kilometre
97 kilometre
100 kilometre
650 kilometre
280 kilometre
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "landform" . ?e_1 <located_on_terrain_feature> ?e . ?e_1 <pred:name> "Port of Spain" .  ?e <width> ?pv .  }
Program:
function: Find
inputs: Port of Spain
function: Relate
dependencies: 0
inputs: located on terrain feature
forward
function: FilterConcept
dependencies: 1
inputs: landform
function: QueryAttr
dependencies: 2
inputs: width
Answer: 97 kilometre