machine_question: who is the prime minister of the country that has the national anthem March Forward, Dear Mother Ethiopia
question: Who is the prime minister of the country that has national anthem March Forward, Dear Mother Ethiopia?
sparql: 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:location.country.national_anthem ?k .
  ?k ns:government.national_anthem_of_a_country.anthem ns:m.01n8bk . 
  ?c ns:government.governmental_jurisdiction.governing_officials ?y .
  ?y ns:government.government_position_held.office_holder ?x .
  ?y ns:government.government_position_held.basic_title ns:m.060bp .
  FILTER(NOT EXISTS {?y ns:government.government_position_held.from ?sk0} || 
  EXISTS {?y ns:government.government_position_held.from ?sk1 . 
  FILTER(xsd:datetime(?sk1) <= "2015-08-10"^^xsd:dateTime) })
  FILTER(NOT EXISTS {?y ns:government.government_position_held.to ?sk2} || 
  EXISTS {?y ns:government.government_position_held.to ?sk3 . 
  FILTER(xsd:datetime(?sk3) >= "2015-08-10"^^xsd:dateTime) })
  }
  
webqsp_question: who is the prime minister of ethiopia