Question: How is Robert Stack related to Hercules, originally aired on American Broadcasting Company ?
Choices: family
spouse
operator
voice actor
characters
facet of
location
genre
geographic distribution
programming language
SPARQL: SELECT DISTINCT ?p WHERE { ?e_1 <pred:name> "Hercules" . ?e_1 <original_network> ?e_3 . ?e_3 <pred:name> "American Broadcasting Company" . ?e_2 <pred:name> "Robert Stack" . ?e_1 ?p ?e_2 .  }
Program:
function: Find
inputs: American Broadcasting Company
function: Relate
dependencies: 0
inputs: original network
backward
function: Find
inputs: Hercules
function: And
dependencies: 1
2
function: Find
inputs: Robert Stack
function: QueryRelation
dependencies: 3
4
Answer: voice actor