How many {described by source} are to/by {The Times} ?
What is the number of sources described by the Times?
How many sources are described by the Times
SELECT ( COUNT ( ?m ) AS ?l ) { ?m property:described_by_source resource:The_Times }
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/P1343> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> http://wikidata.dbpedia.org/resource/Q50008 .
} 

SELECT (COUNT(?sub) AS ?value ) { ?sub wdt:P1343 wd:Q50008 }
188