What is the {accident} with the {MIN(number of missing)} whose {location} is {Lake Toba}  ?
What Lake Toba accident resulted in the least missing persons ?
select ?ent where { ?ent wdt:P31 wd:Q171558 . ?ent wdt:P1446 ?obj . ?ent wdt:P276 wd:Q183360. } ORDER BY ASC(?obj)LIMIT 5 
select ?ent where {
?ent <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q171558>.

?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?ent .
?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1446>.
?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj1.

?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?ent .
?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P276> .
?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q183360> .

}
ORDER BY ASC(?obj1)
LIMIT 5
What Lake Toba accident had the least missing people?