Question: What is the birthdate of this British politician and academic who represents the Liberal Democrats and who co-created the Social Democratic Party in 1981?
Sentence (from "Social Democratic Party (UK, 1990–present)"): It traces its origin to the Social Democratic Party that was formed in 1981 by a group of dissident Labour Party Members of Parliament (MPs) and former MPs: Roy Jenkins, David Owen, Bill Rodgers and Shirley Williams, who became known as the "Gang of Four".
Relevant evidence: No