Question: Who served as junior minister being known for his colorful ties and waistcoasts under the oldest living Prime Minister of the United Kingdom? 
Sentence (from "John Major"): Sir John Major, {'1': ", '2': ", '3': ", '4': "} (born 29 March 1943) is a British politician who was Prime Minister of the United Kingdom and Leader of the Conservative Party from 1990 to 1997.
Relevant evidence: No