What is {mouth of the watercourse} of {Mississippi River} that is {statement is subject of} is {Mississippi River Delta} ?
Where is the mouth of the watercourse of Mississippi River at the Mississippi River Delta?
What is the mouth of the watercourse of Mississippi River at Mississippi River Delta?
SELECT ?k WHERE { ?i property:statement_is_subject_of resource:Mississippi_River_Delta . resource:Mississippi_River property:mouth_of_the_watercourse ?i . ?i property:mouth_of_the_watercourse ?k }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q1497> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P403> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P805> <http://wikidata.dbpedia.org/resource/Q1528035>
} 

SELECT ?obj WHERE { wd:Q1497 p:P403 ?s . ?s ps:P403 ?obj . ?s pq:P805 wd:Q1528035 }