Question: What is the official website of Montgomery County whose Dewey Decimal Classification is 2--77172?
Choices: https://www.dortmund.de/
http://www.charliesheen.com
http://www.mcohio.org
http://www.provincia.roma.it/
http://www.alienmovies.com/
http://www.wharton.upenn.edu/
https://www.mkdons.com/
http://www.studiocanal.com/
http://www.addisababacity.gov.et/
http://www.serenawilliams.com
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:name> "Montgomery County" . ?e <Dewey_Decimal_Classification> ?pv_1 . ?pv_1 <pred:value> "2--77172" . ?e <official_website> ?pv .  }
Program:
function: Find
inputs: Montgomery County
function: FilterStr
dependencies: 0
inputs: Dewey Decimal Classification
2--77172
function: QueryAttr
dependencies: 1
inputs: official website
Answer: http://www.mcohio.org