Create a 5-word summative sentence based on the given story.
The sky was dark and cloudy. Suddenly, a bolt of lightning illuminated the whole sky.
Lightning bolt illuminated the cloudy sky.
Complete the following task based on the instruction and optional input provided.### Instruction:
Create a 5-word summative sentence based on the given story.

### Input:
The sky was dark and cloudy. Suddenly, a bolt of lightning illuminated the whole sky.

### Output:
Lightning bolt illuminated the cloudy sky.