Complex sentence: The The Banerjee Committee, started by Lalu Prasad Yadav and headed up by a retired Supreme Court judge, Umesh Chandra Banerjee, concluded that the fire had started inside the train and was most likely accidental.
Split into simpler sentences: The The Banerjee Committee, started by Lalu Prasad Yadav and headed up by a retired Supreme Court judge, Umesh Chandra Banerjee. This investigation concluded that the fire had started inside the train and was most likely accidental.