Q: In this task, you're given a statement, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.
Context: In 2004, he joined the Bharatiya Janata Party (BJP) Link Information: In April 1980, shortly after the elections, the National Executive Council of the Janata Party banned its members from being 'dual members' of party and the RSS. In response, the former Jana Sangh members left to create a new political party, known as the Bharatiya Janata Party.

Question: Who founded the political party that Khan joined in 2004?
A:
Answer: former Jana Sangh members