How many {ethnic group} are to/by {Uyghur people} ?
What ethnic groups formed from the Uyghur people?
SELECT (COUNT(?sub) AS ?value ) { ?sub wdt:P172 wd:Q46118 }
SELECT (COUNT(?sub) AS ?subs ) {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?sub .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P172> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> http://wikidata.dbpedia.org/resource/Q46118 .
} 

Regarding the Uyghur people, what ethnic groups form it?