Question: What is the head judge of the court which William Johnson serves as called?
Answer(s):
answer: Chief Justice of the United States

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:law.court.judges ?k .
?k ns:law.judicial_tenure.judge ns:m.01hksb . 
?c ns:government.governmental_body.offices_positions ?x .
}