Teacher: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'.
Teacher: Now, understand the problem? Solve this instance: Context: When this material was released by Atco Records, there were mono (catalogue number 33-169) and stereo (SD 33-169) editions. Link Information: ATCO Records is an American record company and label founded in 1955 Question: How long had Atco Records been in business in 1961?
Student:
Answer: 6