What is the {former building or structure} for {home venue} of {Boston Celtics}
What is the former venue for the Boston Celtics?
 select distinct ?obj where { wd:Q131371 wdt:P115 ?obj . ?obj wdt:P31 wd:Q19860854 } 
select distinct ?obj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q131371> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P115> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj . ?obj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q19860854> } 
What is the previous scene for the Boston Celtics?