What is {number of out of school children} of {developed country} that is {point in time} is {2000-1-1} ?
How many school-aged children were there in developed countries in November of 2000?
How many school children were in a developed country in 1-1-2000?
SELECT ?q WHERE { FILTER ( CONTAINS ( YEAR ( ?q ) , '2000' ) ) . resource:developed_country property:number_of_out-of-school_children ?d . ?d property:point_in_time ?q . ?d property:number_of_out-of-school_children ?q }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q132453> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P2573> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P585> <2000-1-1>
} 

SELECT ?obj WHERE { wd:Q132453 p:P2573 ?s . ?s ps:P2573 ?obj . ?s pq:P585 ?x filter(contains(YEAR(?x),'2000')) }