What is {position held} of {Angela Merkel} and {start time}
What is the Glucan with the most elevated least dangerous concentration whose has portion is hydrogen?
When did Angela Merkel  begin her term as prime minister?
SELECT ?g ?k WHERE { ?i property:start_time ?g . . resource:Angela_Merkel property:position_held ?i . ?i property:position_held ?k }
select distinct ?dataprop1 ?obj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q567> . ?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/P580> ?dataprop1 . } 
SELECT ?value1 ?obj WHERE { wd:Q567 p:P39 ?s . ?s ps:P39 ?obj . ?s pq:P580 ?value1 . }