how many martial art categories does tai-chi belong to?
Value
3
class entity
martial_arts.martial_art_category m.07k4r
martial_arts.martial_art_category martial_arts.martial_art
Martial Art Category tai-chi
count none
martial_arts.martial_art.category
Category
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 (COUNT(?x0) AS ?value) WHERE {
SELECT DISTINCT ?x0  WHERE { 
?x0 :type.object.type :martial_arts.martial_art_category . 
VALUES ?x1 { :m.07k4r } 
?x1 :martial_arts.martial_art.category ?x0 . 
FILTER ( ?x0 != ?x1  )
}
}
(COUNT (AND martial_arts.martial_art_category (JOIN (R martial_arts.martial_art.category) m.07k4r)))