In which venues did Yang, Lei publish papers in the last six years and what are the titles of these papers?
List the titles of the papers that Yang, Lei published in the last six years and in which venues.
SELECT DISTINCT ?firstanswer ?secondanswer WHERE { ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/50/2484> . ?x <https://dblp.org/rdf/schema#yearOfPublication> ?y . FILTER(?y > YEAR(NOW())-6) . ?x <https://dblp.org/rdf/schema#publishedIn> ?firstanswer . ?x <https://dblp.org/rdf/schema#title> ?secondanswer }
<https://dblp.org/pid/50/2484>