Question: What person is a cast member in the film titled Happy Days?
Choices: Betty Grable
Saeed Jaffrey
Judah Friedlander
Tommy Lee
Anthony Mackie
Tony Randall
James Arness
Dean Devlin
Melanie Griffith
Pat Morita
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e_1 <cast_member> ?e . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "film" . ?e_1 <title> ?pv . ?pv <pred:value> "Happy Days" .   }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: title
Happy Days
function: FilterConcept
dependencies: 1
inputs: film
function: Relate
dependencies: 2
inputs: cast member
forward
function: FilterConcept
dependencies: 3
inputs: human
function: What
dependencies: 4
Answer: Betty Grable