About: http://dbpedia.org/resource/Category:Unsolved_problems_in

Property	Value
rdf:type	skos:Concept
rdfs:label	Unsolved problems in linguistics
skos:broader	dbpedia:Category:Unsolved_problems dbpedia:Category:Linguistics
skos:prefLabel	Unsolved problems in linguistics
is skos:broader of	dbpedia:Category:Undeciphered_writing_systems dbpedia:Category:Language_isolates dbpedia:Category:Unclassified_languages
is skos:subject of	dbpedia:Gradient_well-formedness dbpedia:Language_development dbpedia:Origin_of_language dbpedia:Unsolved_problems_in_linguistics

About: http://dbpedia.org/resource/Category:Unsolved_problems_in_linguistics