Question: Who was the coach of the Baltimore Ravens who was also Mayor?
Answer(s):
answer: Randy Brown

SPARQL query:
#MANUAL SPARQL
PREFIX ns: <http://rdf.freebase.com/ns/>
SELECT DISTINCT ?x 
WHERE {
  {
    ns:m.01ct6 ns:american_football.football_team.current_head_coach ?x .
  }
  UNION
  {
    ns:m.01ct6 ns:sports.sports_team.coaches ?y .
	?y ns:sports.sports_team_coach_tenure.coach ?x .
	?y ns:sports.sports_team_coach_tenure.position ns:m.02y5kn . #coach
  }?x ns:government.politician.government_positions_held ?c .
?c ns:government.government_position_held.basic_title ns:m.0pqc5 . 
}