Question: Which Instagram handle belongs to the twin city of Port Elizabeth?
Choices: acffiorentinaofficial
curitiba_pmc
oscar_emboaba
ringostarrmusic
sportsklubbenbrann
stokecity
apple
shopsimon
camara_municipal_lisboa
chargers
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "city" . ?e <twinned_administrative_body> ?e_1 . ?e_1 <pred:name> "Port Elizabeth" .  ?e <Instagram_username> ?pv .  }
Program:
function: Find
inputs: Port Elizabeth
function: Relate
dependencies: 0
inputs: twinned administrative body
backward
function: FilterConcept
dependencies: 1
inputs: city
function: QueryAttr
dependencies: 2
inputs: Instagram username
Answer: curitiba_pmc