what is the {inventory number} for {Robert Southey} has {archives at} as {Leeds University Library} ?
Get me the inventory number for Robert Southey in {Leeds University Library?
SELECT ?value WHERE { wd:Q216838 p:P485 ?s . ?s ps:P485 wd:Q24568958 . ?s pq:P217 ?value}
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q216838> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P485> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q24568958> .
?statement <http://www.wikidata.org/entity/P217> ?value. 
} 

What is the inventory number for Robert Southey in Leeds University Library?