jackson & perkins is the asignee for which patent?
Entity Entity
m.0gxbgb3 m.0g9qppn
PP 2,541 Plant Patent 19489
class entity
law.us_patent m.03h3gml
law.us_patent law.patent_assignee
Patent Jackson & Perkins
none none
law.us_patent.assignee
Assignee
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 :law.us_patent . 
VALUES ?x1 { :m.03h3gml } 
?x0 :law.us_patent.assignee ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND law.us_patent (JOIN law.us_patent.assignee m.03h3gml))