Question: Which human is a cast member of the film series that contains Taken 2?
Choices: Timothy Spall
Bradley Cooper
Tommy Lee Jones
Katy Perry
Talia Shire
Andy Lau
Pinto Colvig
Liam Neeson
Andy Warhol
Danny Trejo
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 series" . ?e_2 <part_of_the_series> ?e_1 . ?e_2 <pred:name> "Taken 2" .   }
Program:
function: Find
inputs: Taken 2
function: Relate
dependencies: 0
inputs: part of the series
forward
function: FilterConcept
dependencies: 1
inputs: film series
function: Relate
dependencies: 2
inputs: cast member
forward
function: FilterConcept
dependencies: 3
inputs: human
function: What
dependencies: 4
Answer: Liam Neeson