Given a word and a sentence, identify if the word exists in the sentence.
Word: mountain
Sentence: Snow capped mountain peaks are visible in the background
Yes, the word 'mountain' exists in the sentence.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Given a word and a sentence, identify if the word exists in the sentence.

### Response:
Yes, the word 'mountain' exists in the sentence.