Mention the co-authors of Zhengying Chen.
With which other authors has the author Z. Chen written papers?
SELECT DISTINCT ?answer WHERE { ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/151/8840> . ?x <https://dblp.org/rdf/schema#authoredBy> ?answer FILTER(?answer != <https://dblp.org/pid/151/8840>) }
<https://dblp.org/pid/151/8840>