Given the two words "blue" and "cheerful", edit the sentence below to make it grammatically correct.
Blue cheerful
The sky is blue and the atmosphere is cheerful.
Complete the following task based on the instruction and optional input provided.### Instruction:
Given the two words "blue" and "cheerful", edit the sentence below to make it grammatically correct.

### Input:
Blue cheerful

### Output:
The sky is blue and the atmosphere is cheerful.