question: What opened doors for long recordings ?
answer: The complete technical disclosure of the Columbia LP by Peter C. Goldmark , Rene ' Snepvangers and William S. Bachman
turker_answer: The complete technical disclosure of the Columbia LP by Peter C. Goldmark , Rene ` Snepvangers and William S. Bachman opened doors for long recordings .
rule-based: The complete technical disclosure of the Columbia LP by Peter C. Goldmark , Rene ' Snepvangers and William S. Bachman opened doors for long recordings .