How many {cell component} are for {cholesterol} ?
What is cholesterol's cell component?
What's the cell component of cholesterol?
SELECT ( COUNT ( ?i ) AS ?n ) { resource:cholesterol property:cell_component ?i }
SELECT (COUNT(?obj) AS ?objs ) {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q43656> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P681> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
} 

SELECT (COUNT(?obj) AS ?value ) { wd:Q43656 wdt:P681 ?obj }
4