what is the name of the vaccine that prevents tetanus?
Entity
m.03kx2w
DPT vaccine
class entity
medicine.vaccine m.0cfb2
medicine.vaccine medicine.infectious_disease
Vaccine Tetanus
none none
medicine.vaccine.infectious_disease
Infectious Disease
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.vaccine . 
VALUES ?x1 { :m.0cfb2 } 
?x0 :medicine.vaccine.infectious_disease ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND medicine.vaccine (JOIN medicine.vaccine.infectious_disease m.0cfb2))