which author wrote the literary series that is a sub-series of warlands universe?
Entity
m.05qdk18
Elizabeth Vaughan
class class entity
book.author book.literary_series m.05qd0cj
book.author book.literary_series book.literary_series
Author Literary Series Warlands Universe
none none none
book.literary_series.author_s book.literary_series.sub_series
Author(s) Sub-series
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 :book.author . 
?x1 :type.object.type :book.literary_series . 
VALUES ?x2 { :m.05qd0cj } 
?x1 :book.literary_series.author_s ?x0 . 
?x2 :book.literary_series.sub_series ?x1 . 
FILTER ( ?x0 != ?x1 && ?x0 != ?x2 && ?x1 != ?x2  )
}
}
(AND book.author (JOIN (R book.literary_series.author_s) (JOIN (R book.literary_series.sub_series) m.05qd0cj)))