what is the {start time} for {Everglades National Park} has {significant event} as {List of World Heritage in Danger} ?
what date did the Everglades National Park claim World Heritage's list was in danger?
When did the Everglades National Park claim that there is a List of World Heritage in danger?
SELECT ?a WHERE { resource:Everglades_National_Park property:significant_event ?q . ?q property:start_time ?a . ?q property:significant_event resource:list_of_World_Heritage_in_Danger }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q274131> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P793> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q222384> .
?statement <http://www.wikidata.org/entity/P580> ?value. 
} 

SELECT ?value WHERE { wd:Q274131 p:P793 ?s . ?s ps:P793 wd:Q222384 . ?s pq:P580 ?value}