Question: What is the title of St. Louis Blues (the one whose director is Raoul Walsh)?
Choices: Cry Freedom
Starsky & Hutch
A Fish Called Wanda
The Andy Griffith Show
The Pursuit of Happyness
美少女戦士セーラームーンSuperS セーラー9戦士集結!ブラック・ドリーム・ホールの奇跡
Nurse Jackie
St. Louis Blues
Pacific Palisades
The Notebook
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:name> "St. Louis Blues" . ?e <director> ?e_1 . ?e_1 <pred:name> "Raoul Walsh" .  ?e <title> ?pv .  }
Program:
function: Find
inputs: Raoul Walsh
function: Relate
dependencies: 0
inputs: director
backward
function: Find
inputs: St. Louis Blues
function: And
dependencies: 1
2
function: QueryAttr
dependencies: 3
inputs: title
Answer: St. Louis Blues