How many {type of orbit} are to/by {geosynchronous orbit} ?
What is the total number of orbits that are geosynchronous?
How many types of orbits are geosynchronous?
SELECT ( COUNT ( ?v ) AS ?k ) { ?v property:type_of_orbit resource:geosynchronous_orbit }
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/P522> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> http://wikidata.dbpedia.org/resource/Q472251 .
} 

SELECT (COUNT(?sub) AS ?value ) { ?sub wdt:P522 wd:Q472251 }
31