How many {place of death} are to/by {Terceira Island} ?
What number of people passed away on Terceira Island?
How many people have died on Terceira Island?
SELECT ( COUNT ( ?z ) AS ?f ) { ?z property:place_of_death resource:Terceira_Island }
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/P20> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> http://wikidata.dbpedia.org/resource/Q215074 .
} 

SELECT (COUNT(?sub) AS ?value ) { ?sub wdt:P20 wd:Q215074 }
5