Question: What was the birth date of a British Conservative Party politician who succeeded another British Conservative Party politician who was born 4 October 1947? 
Sentence (from "Stephen Crabb"): He has been the Member of Parliament for Preseli Pembrokeshire since the 2005 general election and was Secretary of State for Work and Pensions from March 2016 until July 2016, when Prime Minister David Cameron resigned and Theresa May took over as Prime Minister and Leader of the Conservative Party.
Relevant evidence: No