What is {mother} and {date of death} of {{Pedro I} has {child} as {Princess Maria Amélia of Brazil}}
What date did Princess Maria Amelia, Pedro the firsts daughter, die and what was the name of her mum?
When did Pedro I's child Princess Maria Amélia of Brazil die and who was her mother?
SELECT ?q ?v WHERE { ?x property:mother ?q . ?x property:child resource:Princess_Maria_Amélia_of_Brazil . ?x property:date_of_death ?v . resource:Pedro_I_of_Brazil property:child ?x }
select distinct ?value1 ?value2 where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q939> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P40> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q235815>. ?statement <http://www.wikidata.org/entity/P580> ?value1 . ?statement <http://www.wikidata.org/entity/P2842> ?value2 } 
SELECT ?value1 ?value2 WHERE { wd:Q939 p:P40 ?s . ?s ps:P40 wd:Q235815 . ?s pq:P25 ?value1 . ?s pq:P570 ?value2 }