Didn't H. Li and Tianyong Hao not co-author a paper?
Was a paper not not co-authored by H. Li and Tianyong H.?
ASK { ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/55/2893> . ?x <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/81/6701> }
<https://dblp.org/pid/55/2893> <https://dblp.org/pid/81/6701>