Question: What is the title of the written work whose OCLC control number is 50441437?
Choices: The Taking of Pelham 123
The Matrix Reloaded
Cosmopolis
The Proposition
American Psycho
Arcadia
Ulysses' Gaze
La mala educación
Batman
House, M.D.
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "written work" . ?e <OCLC_control_number> ?pv_1 . ?pv_1 <pred:value> "50441437" . ?e <title> ?pv .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: OCLC control number
50441437
function: FilterConcept
dependencies: 1
inputs: written work
function: QueryAttr
dependencies: 2
inputs: title
Answer: Cosmopolis