When was the paper on Quality assessment by University of Waterloo, Canada published?
University of Waterloo published a paper on Quality assessment in what year?
SELECT DISTINCT ?answer WHERE { <https://dblp.org/rec/journals/tip/MaZZW15> <https://dblp.org/rdf/schema#authoredBy> ?x . ?x <https://dblp.org/rdf/schema#primaryAffiliation> 'University of Waterloo, Canada' . <https://dblp.org/rec/journals/tip/MaZZW15> <https://dblp.org/rdf/schema#yearOfPublication> ?answer }
<https://dblp.org/rec/journals/tip/MaZZW15>