How many {measured by} are for {intelligence quotient} ?
What do I.Q. scores mean?
What are the scores measured by the intelligence quotient (I.Q.)?
SELECT ( COUNT ( ?x ) AS ?n ) { resource:intelligence_quotient property:measurement_scale ?x }
SELECT (COUNT(?obj) AS ?objs ) {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q170277> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1880> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
} 

SELECT (COUNT(?obj) AS ?value ) { wd:Q170277 wdt:P1880 ?obj }
5