Question: What is the ISBN-13 of The Polar Express (the one that received Caldecott Medal)?
Choices: 978-0-394-58816-2
978-84-397-2077-5
978-0-394-49821-8
978-1-85227-381-1
978-2-07-075907-1
978-0-395-38949-2
978-0-7172-6059-1
978-0-15-602732-8
978-2-7436-0962-7
978-0-14-118267-4
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:name> "The Polar Express" . ?e <award_received> ?e_1 . ?e_1 <pred:name> "Caldecott Medal" .  ?e <ISBN-13> ?pv .  }
Program:
function: Find
inputs: Caldecott Medal
function: Relate
dependencies: 0
inputs: award received
backward
function: Find
inputs: The Polar Express
function: And
dependencies: 1
2
function: QueryAttr
dependencies: 3
inputs: ISBN-13
Answer: 978-0-395-38949-2