Input (grade 13): When protests against the militarisation by the Nawab of Bengal Siraj-Ud-Daulah went unheeded he attacked and captured Fort William, leading to the infamous Black Hole of Calcutta incident.
Output (grade 6): When this was protested, the Nawab of Bengal Siraj-Ud-Daulah attacked and captured Fort William. This led to the infamous Black Hole incident.