How many {doctoral student} are for {Lawrence Klein} ?
How many doctoral students are at Lawrence Klein?
SELECT (COUNT(?obj) AS ?value ) { wd:Q295761 wdt:P185 ?obj }
SELECT (COUNT(?obj) AS ?objs ) {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q295761> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P185> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
} 

Which is the number of doctoral students at Lawrence Klein?