Complex sentence: Matiur Rahman Mallik, a national activitist who died on 24th January 1969 killed by the Pakistani police, was the son of Azhar Ali Mallik from Sabujbagh, Dhaka.
Split into simpler sentences: Matiur Rahman Mallik, a national activitist who died on 24 January 1969. He was killed by the Pakistani police and he was the son of Azhar Ali Mallik from Sabujbagh, Dhaka.