How many {main food source} are for {Pongo} ?
What is the Pongo people's main food source?
What's the main food source for the Pongo people?
SELECT ( COUNT ( ?o ) AS ?t ) { resource:Orangutan property:main_food_source ?o }
SELECT (COUNT(?obj) AS ?objs ) {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q41050> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1034> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
} 

SELECT (COUNT(?obj) AS ?value ) { wd:Q41050 wdt:P1034 ?obj }
7