name the lighthouses made out of cement.
Entity Entity Entity
m.05fpjh m.0h4791 m.04bpgc
Point Iroquois Light Point Bonita Lighthouse Fire Island Lighthouse
class entity
architecture.lighthouse m.01ynw
architecture.lighthouse architecture.lighthouse_construction_material
Lighthouse Cement
none none
architecture.lighthouse.construction
Construction
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 :architecture.lighthouse . 
VALUES ?x1 { :m.01ynw } 
?x0 :architecture.lighthouse.construction ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND architecture.lighthouse (JOIN architecture.lighthouse.construction m.01ynw))