Question: Tell me the TV series featuring Sam Neill in the cast (the character role of this statement is Merlin)
Choices: Merlin
The Stand
The Civil War
Battlestar Galactica
The Pacific
Edge of Darkness
George Washington
Roots
The Diary of Anne Frank
The Ten Commandments
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "television series" . ?e <cast_member> ?e_1 . ?e_1 <pred:name> "Sam Neill" .  [ <pred:fact_h> ?e ; <pred:fact_r> <cast_member> ; <pred:fact_t> ?e_1 ] <character_role> ?qpv . ?qpv <pred:value> "Merlin" .  }
Program:
function: Find
inputs: Sam Neill
function: Relate
dependencies: 0
inputs: cast member
backward
function: QFilterStr
dependencies: 1
inputs: character role
Merlin
function: FilterConcept
dependencies: 2
inputs: television series
function: What
dependencies: 3
Answer: Merlin