the references of methadone effects on zidovudine (zdv, azt) disposition cited what works?
Value
2
class entity
book.cited_work m.03zbbxg
book.cited_work medicine.medical_trial
Cited work Methadone Effects on Zidovudine (ZDV, AZT) Disposition
count none
medicine.medical_trial.references
References
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 (COUNT(?x0) AS ?value) WHERE {
SELECT DISTINCT ?x0  WHERE { 
?x0 :type.object.type :book.cited_work . 
VALUES ?x1 { :m.03zbbxg } 
?x1 :medicine.medical_trial.references ?x0 . 
FILTER ( ?x0 != ?x1  )
}
}
(COUNT (AND book.cited_work (JOIN (R medicine.medical_trial.references) m.03zbbxg)))