How many {statement describes} are to/by {conic section} ?
The conic section describes how many?
How many describes the statement of the {conic section} ?
SELECT ( COUNT ( ?m ) AS ?a ) { ?m property:statement_describes resource:conic_section }
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/P2384> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> http://wikidata.dbpedia.org/resource/Q124255 .
} 

SELECT (COUNT(?sub) AS ?value ) { ?sub wdt:P2384 wd:Q124255 }
4