What is {position held} of {Arcadius} that is {replaces} is {Theodosius I} ?
What position did Theodosius I have when Arcadius replaced him?
SELECT ?obj WHERE { wd:Q159369 p:P39 ?s . ?s ps:P39 ?obj . ?s pq:P1365 wd:Q46696 }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q159369> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P39> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P1365> <http://wikidata.dbpedia.org/resource/Q46696>
} 

when Arcadius replaced him, which positioin did theodosius have?