How many publications did the authors of the paper 'ATHENA@CL-SciSumm 2019: Siamese recurrent bi-directional neural network for identifying cited text spans' publish in BIRNDL@SIGIR?
Count the papers published by the authors of 'ATHENA@CL-SciSumm 2019: Siamese recurrent bi-directional neural network for identifying cited text spans' in BIRNDL@SIGIR.
SELECT DISTINCT (COUNT(?answer) AS ?count) WHERE { <https://dblp.org/rec/conf/sigir/FergadisPP19> <https://dblp.org/rdf/schema#authoredBy> ?x . ?answer <https://dblp.org/rdf/schema#authoredBy> ?x . ?answer <https://dblp.org/rdf/schema#publishedIn> 'BIRNDL@SIGIR' }
<https://dblp.org/rec/conf/sigir/FergadisPP19>