which aviation incident included 28 crews?
Entity
m.0ds8x41
Tajik National Guard helicopter crash
class literal
aviation.airliner_accident 28^^http://www.w3.org/2001/XMLSchema#integer
aviation.airliner_accident type.int
Aviation incident 28
none none
aviation.airliner_accident.crew
Crew
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 :aviation.airliner_accident . 
VALUES ?x1 { "28"^^<http://www.w3.org/2001/XMLSchema#integer> } 
?x0 :aviation.airliner_accident.crew ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND aviation.airliner_accident (JOIN aviation.airliner_accident.crew 28^^http://www.w3.org/2001/XMLSchema#integer))