Question: What is the production code of the TV series episode directed by Steven Levitan?
Choices: K0123
423
454
177
69421
271
111
164
1ARG23
K1121
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "television series episode" . ?e <director> ?e_1 . ?e_1 <pred:name> "Steven Levitan" .  ?e <production_code> ?pv .  }
Program:
function: Find
inputs: Steven Levitan
function: Relate
dependencies: 0
inputs: director
backward
function: FilterConcept
dependencies: 1
inputs: television series episode
function: QueryAttr
dependencies: 2
inputs: production code
Answer: 1ARG23