what are the ski areas with 23 runs?
Entity Entity
m.025rxbt m.019dl9
Wachusett Mountain Suicide Six Ski Area
class literal
skiing.ski_area 23^^http://www.w3.org/2001/XMLSchema#integer
skiing.ski_area type.int
Ski Area 23
none none
skiing.ski_area.number_of_runs
Number of runs
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 :skiing.ski_area . 
VALUES ?x1 { "23"^^<http://www.w3.org/2001/XMLSchema#integer> } 
?x0 :skiing.ski_area.number_of_runs ?x1 . 
FILTER ( ?x0 != ?x1  )
}
}
(AND skiing.ski_area (JOIN skiing.ski_area.number_of_runs 23^^http://www.w3.org/2001/XMLSchema#integer))