I want to know the answer to the following question:
Besides Barcelona and Real Madrid, what other team has remained in the Primera Division?
All the background I'm provided with is that "In 2009, Barcelona became the first Spanish club to win the continental treble consisting of La Liga, Copa del Rey, and the UEFA Champions League, and also became the first football club to win six out of six competitions in a single year, completing the sextuple in also winning the Spanish Super Cup, UEFA Super Cup and FIFA Club World Cup.". Is that enough to answer the question?
Answer: no