select * 
  from sparql.get_properties('dbpedia','http://dbpedia.org/resource/Johann_Sebastian_Bach')
 where predicate='http://dbpedia.org/ontology/birthYear';
               predicate               | object | value | lang |                datatype                
---------------------------------------+--------+-------+------+----------------------------------------
 http://dbpedia.org/ontology/birthYear | 1685   | 1685  |      | http://www.w3.org/2001/XMLSchema#gYear
(1 row)