How many {regulates (molecular biology)} are to/by {DNA repair} ?
How many cells regulates by DNA repair?
SELECT (COUNT(?sub) AS ?value ) { ?sub wdt:P128 wd:Q210538 }
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/P128> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> http://wikidata.dbpedia.org/resource/Q210538 .
} 

DNA repair is regulated by how many cells?