Question: Tell me the tv series that derives Land of the Los (the one that mostly depicts dinosaurs)
Choices: Game of Thrones
Saturday Night's Main Event
American Horror Story
Jesus of Nazareth
Land of the Lost
WWE SmackDown
Lost in Space
The Flintstones
Bleak House
Robot Chicken
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "television series" . ?e <derivative_work> ?e_1 . ?e_1 <pred:name> "Land of the Lost" . ?e_1 <main_subject> ?e_2 . ?e_2 <pred:name> "dinosaur" .   }
Program:
function: Find
inputs: dinosaur
function: Relate
dependencies: 0
inputs: main subject
backward
function: Find
inputs: Land of the Lost
function: And
dependencies: 1
2
function: Relate
dependencies: 3
inputs: derivative work
backward
function: FilterConcept
dependencies: 4
inputs: television series
function: What
dependencies: 5
Answer: Land of the Lost