Detailed Instructions: In this task, you're given a question, along with a context passage which has extra information available on certain terms mentioned in it. Your job is to determine which sentence(s) from the passage can be used to search for further information needed to answer the question.
Problem:Question: Who was the producer on Proclaimers' comeback album? Passage:The pair came to public attention when an Inverness-based fan sent their demo to the English band the Housemartins, who were impressed enough to invite the Proclaimers on their 1986 United Kingdom tour. The exposure of the tour won them a January 1987 appearance on the British pop music television programme The Tube on Channel Four; "Letter from America" peaked at number three in the UK Singles Chart, while the album This Is the Story went gold. The follow-up album Sunshine on Leith featured the singles "I'm Gonna Be (500 Miles)", which went to number one in Australia and New Zealand, and "I'm On My Way". They had a hit with their EP King of the Road, which reached number nine in the UK in 1990. "I'm Gonna Be (500 Miles)" belatedly peaked at number three on the Billboard Hot 100 in August 1993, after appearing in the movie Benny & Joon, becoming their only charted single in the United States. After seven low-profile years, they released their comeback album Persevere in 2001.

Solution:
After seven low-profile years, they released their comeback album Persevere in 2001