Complex sentence: It is one of the deadliest seasons that have almost killed 427 people so far.North Indian Ocean cyclone season has no official bounds, but cyclones tend to form between April and December, with the two peaks in May and November.
Split into simpler sentences: It is one of the deadliest seasons that have almost killed 427 people so far. The North Indian Ocean cyclone season has no official bounds, but cyclones tend to form between April and December, with the two peaks in May and November.