Question: Which large city is Waterford's twinned administrative body?
Choices:
Bochum
Utrecht
Chemnitz
Pasadena
Boulogne-Billancourt
Metz
St. John's
Rochester
Lyon
Stuttgart
Answer: St. John's
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "big city" . ?e <twinned_administrative_body> ?e_1 . ?e_1 <pred:name> "Waterford" .   }
Program:
function: Find
inputs: Waterford
function: Relate
dependencies: 0
inputs: twinned administrative body
backward
function: FilterConcept
dependencies: 1
inputs: big city
function: What
dependencies: 2