premise: Arthur Charles Valerian Wellesley, 9th Duke of Wellington, (born 19 August 1945) is a British aristocrat and politician. He has served as Conservative Party Member of the European Parliament (1984–1989) for Surrey West and currently sits as a hereditary peer in the House of Lords since 2015.
hypothesis: The House of Lords has been around since 1945.
reason: It was difficult for the system because it is the year The Duke was born, however, it is never stated when The House of Lords came around, only the year he became a peer there.