What is {chairperson} of {International Ski Federation} that is {start time} is {1924-0-0} ?
In 1924, who chaired the International Ski Federation?
Who was the chairperson of the International Ski Federation in the year 1924?
SELECT ?p WHERE { ?z property:start_time ?l . resource:International_Ski_Federation property:chairperson ?z . ?z property:chairperson ?p . FILTER ( CONTAINS ( YEAR ( ?l ) , '1924' ) ) }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q212928> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P488> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P580> <1924-0-0>
} 

SELECT ?obj WHERE { wd:Q212928 p:P488 ?s . ?s ps:P488 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1924')) }