sep. the 27th, 2012 marks the date of what drug's expiration?
Entity Entity Entity
m.0hqn6b4 m.0hqpxxh m.0hqp30v
Revatio 20 film coated tablet Revatio 0.8 solution Revatio 20 film coated tablet
class literal
medicine.manufactured_drug_form 2012-09-27^^http://www.w3.org/2001/XMLSchema#date
medicine.manufactured_drug_form type.datetime
Manufactured drug form Sep. the 27th, 2012
none none
medicine.manufactured_drug_form.patent_expiry_date
Patent expiry date
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 :medicine.manufactured_drug_form . 
VALUES ?x1 { "2012-09-27-08:00"^^<http://www.w3.org/2001/XMLSchema#date> } 
?x0 :medicine.manufactured_drug_form.patent_expiry_date ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND medicine.manufactured_drug_form (JOIN medicine.manufactured_drug_form.patent_expiry_date 2012-09-27^^http://www.w3.org/2001/XMLSchema#date))