Question: Which university's headquarter's location is a city with postal codes  1100–1109 (the street number of this statement is 21) ?
Choices: Imperial College London
Panjab University
McNeese State University
University of Melbourne
McMaster University
University of Tehran
King's College London
University of Amsterdam
Pennsylvania State University
Presidency University
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "university" . ?e <headquarters_location> ?e_1 . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "city" . ?e_1 <postal_code> ?pv . ?pv <pred:value> "1100–1109" .  [ <pred:fact_h> ?e ; <pred:fact_r> <headquarters_location> ; <pred:fact_t> ?e_1 ] <street_number> ?qpv . ?qpv <pred:value> "21" .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: postal code
1100–1109
function: FilterConcept
dependencies: 1
inputs: city
function: Relate
dependencies: 2
inputs: headquarters location
backward
function: QFilterStr
dependencies: 3
inputs: street number
21
function: FilterConcept
dependencies: 4
inputs: university
function: What
dependencies: 5
Answer: University of Amsterdam