In 2011 in CASE, what are the titles of the papers on Glass machine?
What are the titles of the papers on Glass machine that were published in CASE in 2011?
SELECT DISTINCT ?answer WHERE { <https://dblp.org/rec/conf/case/SernaCBRC11> <https://dblp.org/rdf/schema#publishedIn> 'CASE' . <https://dblp.org/rec/conf/case/SernaCBRC11> <https://dblp.org/rdf/schema#yearOfPublication> '2011' . <https://dblp.org/rec/conf/case/SernaCBRC11> <https://dblp.org/rdf/schema#title> ?answer }
<https://dblp.org/rec/conf/case/SernaCBRC11>