Include date of birth in SPARQL results when selecting by DoB in query on BNB

Include date of birth in SPARQL results

PREFIX bio: <http://purl.org/vocab/bio/0.1/>
PREFIX foaf: <http://xmlns.com/foaf/0.1/>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>

SELECT ?author ?name ?dob WHERE {
   ?event a bio:Birth;
      bio:date "1945"^^xsd:gYear;
      bio:date ?dob.
   ?author bio:event ?event;
      foaf:name ?name.
}

LIMIT 50

Thank you for this!