on 1915-04-26 which patent was revoked?
Entity
m.05bhbrm
Improvements in & relating to Kinematograph Apparatus for the Production of Coloured Pictures
class literal
law.us_patent 1915-04-26^^http://www.w3.org/2001/XMLSchema#date
law.us_patent type.datetime
Patent 1915-04-26
none none
law.us_patent.date_revoked
Date revoked
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 :law.us_patent . 
VALUES ?x1 { "1915-04-26-08:00"^^<http://www.w3.org/2001/XMLSchema#date> } 
?x0 :law.us_patent.date_revoked ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND law.us_patent (JOIN law.us_patent.date_revoked 1915-04-26^^http://www.w3.org/2001/XMLSchema#date))