Question: What website officially designates the agency headquartered in Dhaka?
Choices: http://www.pbs.org/americanmasters
http://www.tc.columbia.edu
https://www.mkdons.com/
http://www.mairie-versailles.fr
http://www.launceston.tas.gov.au/lcc/
https://www.ubisoft.com/en-us/
http://www.impacdublinaward.ie/
https://www.dccomics.com/characters/superman
http://www.eiu.edu/
http://www.du.ac.bd/
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "agent" . ?e <headquarters_location> ?e_1 . ?e_1 <pred:name> "Dhaka" .  ?e <official_website> ?pv .  }
Program:
function: Find
inputs: Dhaka
function: Relate
dependencies: 0
inputs: headquarters location
backward
function: FilterConcept
dependencies: 1
inputs: agent
function: QueryAttr
dependencies: 2
inputs: official website
Answer: http://www.du.ac.bd/