Task: Explanation
Input (English): Symbios Logic was a manufacturer of SCSI host adapter chipsets and disk array storage subsystems. It was originally established as a division of NCR Corporation in 1972, before NCR's takeover by AT&T Corporation in 1991. Question: The NCR Corporation (originally National Cash Register) was taken over by what company in 1991? Answer: AT&T Corporation
Output (English):  It was originally established as a division of NCR Corporation in 1972, before NCRs takeover by ATT Corporation in 1991.