List the papers published by Zhao, Wen-Xiao in the last four years.
Which papers did Wen-Xiao Zhao publish in the last 4 years?
SELECT DISTINCT ?answer WHERE { ?answer <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/77/8083> . ?answer <https://dblp.org/rdf/schema#yearOfPublication> ?y FILTER(?y > YEAR(NOW())-4) }
<https://dblp.org/pid/77/8083>