what is the name of the polling authority that ran the most recent election polls taken by investor's business daily?
Entity
m.01sr6c
Christian Science Publishing Society
class class literal entity
government.polling_authority government.election_poll 0^^http://www.w3.org/2001/XMLSchema#int m.0100td04
government.polling_authority government.election_poll type.datetime government.polling_authority
Polling authority Election poll 0 Investor's Business Daily
none none argmax none
government.polling_authority.polls government.election_poll.poll_start_date government.election_poll.taken_by
Election polls Poll start date Taken by
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 :government.polling_authority . 
?x1 :type.object.type :government.election_poll . 
{
SELECT (MAX(?y2) AS ?x2)  WHERE { 
?y0 :type.object.type :government.polling_authority . 
?y1 :type.object.type :government.election_poll . 
VALUES ?y3 { :m.0100td04 } 
?y0 :government.polling_authority.polls ?y1 . 
?y1 :government.election_poll.poll_start_date ?y2 . 
?y1 :government.election_poll.taken_by ?y3 . 
FILTER ( ?y0 != ?y1 && ?y0 != ?y2 && ?y0 != ?y3 && ?y1 != ?y2 && ?y1 != ?y3 && ?y2 != ?y3  )
}
}
VALUES ?x3 { :m.0100td04 } 
?x0 :government.polling_authority.polls ?x1 . 
?x1 :government.election_poll.poll_start_date ?x2 . 
?x1 :government.election_poll.taken_by ?x3 . 
FILTER ( ?x0 != ?x1 && ?x0 != ?x2 && ?x0 != ?x3 && ?x1 != ?x2 && ?x1 != ?x3 && ?x2 != ?x3  )
}
}
(ARGMAX (AND government.polling_authority (JOIN government.polling_authority.polls (JOIN government.election_poll.taken_by m.0100td04))) (JOIN government.polling_authority.polls government.election_poll.poll_start_date))