Question: In which seasons did the team with a mascot named Clark play in the world series?
Answer(s):
answer: 1908 World Series
answer: 1907 World Series

SPARQL query:
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x
WHERE {
FILTER (?x != ?c)
FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
?c ns:sports.sports_team.team_mascot ns:m.0_yll7n . 
?c ns:sports.sports_team.championships ?x .
}