In this task, you are given a context paragraph, a question based on that and corresponding answer of a question. Your task is to generate supporting fact/knowledge from context paragraph which helps in answering a given question.

Joseph Siffert (7 July 1936 24 October 1971) was a Swiss racing driver. Question: What is the birth date of the person who won his first Formula One victory at the 1968 British Grand Prix? Answer: 7 July 1936
Joseph Siffert 7 July 1936 24 October 1971 was a Swiss racing driver.