on 09/18/1984, which protected site was established?
Entity Entity Entity Entity Entity
m.0bln7w m.0bgx8h m.0bz2gp m.0bznc6 m.0b9kxb
Dark Canyon Wilderness Box-Death Hollow Wilderness Deseret Peak Wilderness High Uintas Wilderness Ashdown Gorge Wilderness
class literal
protected_sites.protected_site 1984-09-18^^http://www.w3.org/2001/XMLSchema#date
protected_sites.protected_site type.datetime
Protected Site 09/18/1984
none none
protected_sites.protected_site.date_established
Date Established
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> PREFIX : <http://rdf.freebase.com/ns/> 
SELECT (?x0 AS ?value) WHERE {
SELECT DISTINCT ?x0  WHERE { 
?x0 :type.object.type :protected_sites.protected_site . 
VALUES ?x1 { "1984-09-18-08:00"^^<http://www.w3.org/2001/XMLSchema#date> } 
?x0 :protected_sites.protected_site.date_established ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND protected_sites.protected_site (JOIN protected_sites.protected_site.date_established 1984-09-18^^http://www.w3.org/2001/XMLSchema#date))