Complex sentence: Bose escaped from under British surveillance at his house in Calcutta on 19 January 1941, accompanied by his nephew Sisir K. Bose in a car that is now on display at his Calcutta home.
Split into simpler sentences: Bose escaped from under British surveillance at his house in Calcutta. On 19 January 1941, accompanied by his nephew Sisir K. Bose in a car that is now on display at his Calcutta home.