what is the {date of disappearance} for {thylacine} has {IUCN conservation status} as {extinct} ?
On what date did IUCN conservation status of the Thylacine change to extinct?
When did the IUCN conservation status of the Thylacine change to extinct?
SELECT ?i WHERE { resource:thylacine property:IUCN_conservation_status ?x . ?x property:date_of_disappearance ?i . ?x property:IUCN_conservation_status resource:extinct_species }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q123102> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P141> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q237350> .
?statement <http://www.wikidata.org/entity/P746> ?value. 
} 

SELECT ?value WHERE { wd:Q123102 p:P141 ?s . ?s ps:P141 wd:Q237350 . ?s pq:P746 ?value}