Original sentence: His residence at 10 Lake Terrace, Calcutta now houses the Centre for Studies in Social Sciences, Calcutta, an autonomous research centre
Edited sentence: His residence at 10 Lake Terrace, Calcutta housed the Centre for Studies in Social Sciences, Calcutta, an autonomous research centre from 1973 to 2000.It now houses the newly established Jadunath Sarkar Centre for Historical Research, under the aegis of the CSSSC