instruction:
In this task, you're given a context, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both context and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the context or linked information.
question:
Context: Prior to the 2004–05 season, the Lakers traded Payton and Rick Fox to the Boston Celtics Link Information: The season ended with the San Antonio Spurs defeating the defending-champion Detroit Pistons, 4–3, in the NBA Finals. Answer: San Antonio Spurs
answer:
What team won the NBA championship the season just after  the Lakers traded Payton and Rick Fox to the Boston Celtics?


question:
Context: On February 14, 1989, it became the group's first single to be certified Platinum by the RIAA. Link Information: Reflecting growth in record sales, the Platinum award was added in 1976, for albums able to sell one million units, and singles selling two million units. Answer: for albums able to sell one million units, and singles selling two million units
answer:
How many sales are required to get the certification from the RIAA that Enjoy Yourself recieved in 1989?


question:
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.

 Answer: former Jana Sangh members
answer:

Who founded the political party that Khan joined in 2004?