In 2009, how many papers did the authors of 'Facial Expression Recognition Using Embedded Hidden Markov Model' publish?
Count the papers published by the authors of 'Facial Expression Recognition Using Embedded Hidden Markov Model' in 2009.
SELECT DISTINCT (COUNT(?answer) AS ?count) WHERE { <https://dblp.org/rec/conf/smc/HeWYW09> <https://dblp.org/rdf/schema#authoredBy> ?x . ?answer <https://dblp.org/rdf/schema#authoredBy> ?x . ?answer <https://dblp.org/rdf/schema#yearOfPublication> '2009' }
<https://dblp.org/rec/conf/smc/HeWYW09>