How many {diplomatic relation} are to/by {Bangladesh} ?
What is the number of Bangladeshi diplomatic partners?
SELECT (COUNT(?sub) AS ?value ) { ?sub wdt:P530 wd:Q902 }
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/P530> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> http://wikidata.dbpedia.org/resource/Q902 .
} 

There are how many Bangladeshi diplomatic partners?