How many authors of 'Qualifications of Instruction Sequence Failures, Faults and Defects: Dormant, Effective, Detected, Temporary, and Permanent' have University of Amsterdam, Netherlands as their primary affiliation?
What is the count of authors of 'Qualifications of Instruction Sequence Failures, Faults and Defects: Dormant, Effective, Detected, Temporary, and Permanent' who have University of Amsterdam as their primary affiliation?
SELECT (COUNT(DISTINCT ?answer) AS ?count) WHERE { <https://dblp.org/rec/journals/cuza/Bergstra21> <https://dblp.org/rdf/schema#authoredBy> ?answer . ?answer <https://dblp.org/rdf/schema#primaryAffiliation> 'University of Amsterdam, Netherlands' }
<https://dblp.org/rec/journals/cuza/Bergstra21>