The following query should return the name of the city of Christiano Ronaldo's birth. Why doesn't...

   

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The following query should return the name of the city of Christiano Ronaldo's birth. Why doesn't it? SELECT DISTINCT * WHERE { } "Cristiano Ronaldo"@en dbo:birthplace [ dbo: City; rdfs: label ?cityName a. a ]. FILTER (LANG (?cityName) = 'en' ) "Christiano Ronaldo"@en is a string, not a URL. It can't be the subject of a triple. The WHERE clause should begin [] rdfs: label "Cristiano Ronaldo"@en ; b. The first part of the WHERE clause is a duple, not a triple. The object is missing. O c. Ronaldo's place of birth is not in Wikipedia in a way that dbpedia can access. O d. The city is not in England, so the filter removes it. The following query should return the name of the city of Christiano Ronaldo's birth. Why doesn't it? SELECT DISTINCT * WHERE { } "Cristiano Ronaldo"@en dbo:birthplace [ dbo: City; rdfs: label ?cityName a. a ]. FILTER (LANG (?cityName) = 'en' ) "Christiano Ronaldo"@en is a string, not a URL. It can't be the subject of a triple. The WHERE clause should begin [] rdfs: label "Cristiano Ronaldo"@en ; b. The first part of the WHERE clause is a duple, not a triple. The object is missing. O c. Ronaldo's place of birth is not in Wikipedia in a way that dbpedia can access. O d. The city is not in England, so the filter removes it.

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