amazon.com is the supplier for which customer?
Entity
m.07z2zq
4INFO
class entity
business.customer m.0mgkg
business.customer business.business_operation
Customer Amazon.com
none none
business.customer.supplier
Supplier
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 :business.customer . 
VALUES ?x1 { :m.0mgkg } 
?x0 :business.customer.supplier ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND business.customer (JOIN business.customer.supplier m.0mgkg))