what other stock issue has the same issuer as opticon systems inc common stock?
Entity
m.0x29nvw
Infrax Systems Inc. Common Stock
class class entity
business.issue business.issuer m.0wy0jg5
business.issue business.issuer business.issue
Issue Issuer OptiCon Systems Inc common stock
none none none
business.issuer.issue business.issuer.issue
Issue Issue
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.issue . 
?x1 :type.object.type :business.issuer . 
VALUES ?x2 { :m.0wy0jg5 } 
?x1 :business.issuer.issue ?x0 . 
?x1 :business.issuer.issue ?x2 . 
FILTER ( ?x0 != ?x1 && ?x0 != ?x2 && ?x1 != ?x2  )
}
}
(AND business.issue (JOIN (R business.issuer.issue) (JOIN business.issuer.issue m.0wy0jg5)))