Mention the year in which University of Central Florida published a paper on Novelty search.
University of Central Florida, Orlando, USA published a paper on Novelty search in what year?
SELECT DISTINCT ?answer WHERE { <https://dblp.org/rec/conf/gecco/LehmanS11> <https://dblp.org/rdf/schema#authoredBy> ?x . ?x <https://dblp.org/rdf/schema#primaryAffiliation> 'University of Central Florida, Orlando, USA' . <https://dblp.org/rec/conf/gecco/LehmanS11> <https://dblp.org/rdf/schema#yearOfPublication> ?answer }
<https://dblp.org/rec/conf/gecco/LehmanS11>