How many {designed by} are for {ENIAC} ?
How many are designed for the ENIAC?
SELECT (COUNT(?obj) AS ?value ) { wd:Q169399 wdt:P287 ?obj }
SELECT (COUNT(?obj) AS ?objs ) {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q169399> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P287> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
} 

how many key roles played for designing ENIAC?