Question: Which higher education institution located in the Netherlands has the official website http://www.leiden.nl/?
Choices: University of Manchester
Leiden University
Pennsylvania State University
McNeese State University
Imperial College London
King's College London
McMaster University
Panjab University
University of Melbourne
University of Tehran
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "higher education institution" . ?e <headquarters_location> ?e_1 . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "municipality of the Netherlands" . ?e_1 <official_website> ?pv . ?pv <pred:value> "http://www.leiden.nl/" .  [ <pred:fact_h> ?e ; <pred:fact_r> <headquarters_location> ; <pred:fact_t> ?e_1 ] <country> ?qpv . ?qpv <pred:value> "Netherlands" .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: official website
http://www.leiden.nl/
function: FilterConcept
dependencies: 1
inputs: municipality of the Netherlands
function: Relate
dependencies: 2
inputs: headquarters location
backward
function: QFilterStr
dependencies: 3
inputs: country
Netherlands
function: FilterConcept
dependencies: 4
inputs: higher education institution
function: What
dependencies: 5
Answer: Leiden University