Question: What year did the US Presidential candidate who said "Our Union: It must be preserved." run for president?
Answer(s):
answer: Andrew Jackson Presidential Campaign, 1824
answer: Andrew Jackson Presidential Campaign, 1828
answer: Andrew Jackson Presidential Campaign, 1832

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SELECT DISTINCT ?x
WHERE {
FILTER (?x != ?c)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
?c ns:people.person.quotations ns:m.048k5wh . 
?c ns:government.politician.election_campaigns ?x .
}