Complex sentence: Siddhartha Vanasthali Institute (S.V.I) is one of the largest and oldest academic institutes of Nepal.It's history root back to 1951 AD but it became an established instituion in 1973.
Split into simpler sentences: Siddhartha Vanasthali Institute (S.V.I) is one of the largest and oldest academic institutes of Nepal. Its' history root back to 1951 AD but it became an established instituion in 1973.