which conference series is sponsored by pls inc, and is also a type of business conference?
Entity
m.0lst6bj
MarketMakers
class entity entity
conferences.conference_series m.04kv18 m.0l2m9yd
conferences.conference_series conferences.type_of_conference conferences.conference_sponsor
Conference series Business conference PLS Inc
none none none
conferences.type_of_conference.conferences_of_this_type conferences.conference_series.sponsoring_organization
Conferences of this type Sponsoring organization
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 :conferences.conference_series . 
VALUES ?x1 { :m.04kv18 } 
VALUES ?x2 { :m.0l2m9yd } 
?x1 :conferences.type_of_conference.conferences_of_this_type ?x0 . 
?x0 :conferences.conference_series.sponsoring_organization ?x2 . 
FILTER ( ?x0 != ?x1 && ?x0 != ?x2 && ?x1 != ?x2  )
}
}
(AND conferences.conference_series (AND (JOIN (R conferences.type_of_conference.conferences_of_this_type) m.04kv18) (JOIN conferences.conference_series.sponsoring_organization m.0l2m9yd)))