In which year were the first papers of the authors of 'Named Entity Extraction using AdaBoost' published?
Mention the year in which the first papers of the authors of 'Named Entity Extraction using AdaBoost' were published.
SELECT DISTINCT ?answer MIN(xsd:integer(?y)) AS ?y WHERE { <https://dblp.org/rec/conf/conll/CarrerasMP02> <https://dblp.org/rdf/schema#authoredBy> ?answer . ?x <https://dblp.org/rdf/schema#authoredBy> ?answer . ?x <https://dblp.org/rdf/schema#yearOfPublication> ?y }
<https://dblp.org/rec/conf/conll/CarrerasMP02>