What is {position held} of {Ludwig Erhard} that is {series ordinal} is {2} ?
What is the name of Ludwig Erhard Portfolio for two years?
What position did Ludwig Erhard hold for two years?
SELECT ?m WHERE { ?z property:position_held ?m . resource:Ludwig_Erhard property:position_held ?z . FILTER ( ?k = 2 ) . ?z property:series_ordinal ?k }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q2496> .
?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/P1545> <2>
} 

SELECT ?obj WHERE { wd:Q2496 p:P39 ?s . ?s ps:P39 ?obj . ?s pq:P1545 ?x filter(contains(?x , '2')) }