Question: Whose birthplace is the US city that has been the twin administrative body of Regensburg since 1978?
Choices: Steven Moffat
William Henry Harrison
David Byrne
Sylvester Stallone
Steve Englehart
David Letterman
Joe Jackson
Adrien Brody
Richard Gere
Max Fleischer
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <place_of_birth> ?e_1 . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "city of the United States" . ?e_2 <twinned_administrative_body> ?e_1 . ?e_2 <pred:name> "Regensburg" . [ <pred:fact_h> ?e_2 ; <pred:fact_r> <twinned_administrative_body> ; <pred:fact_t> ?e_1 ] <start_time> ?qpv . ?qpv <pred:year> 1978 .   }
Program:
function: Find
inputs: Regensburg
function: Relate
dependencies: 0
inputs: twinned administrative body
forward
function: QFilterYear
dependencies: 1
inputs: start time
1978
=
function: FilterConcept
dependencies: 2
inputs: city of the United States
function: Relate
dependencies: 3
inputs: place of birth
backward
function: FilterConcept
dependencies: 4
inputs: human
function: What
dependencies: 5
Answer: Joe Jackson