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 given sentence.
Complete the following task based on the instruction and optional input provided.### Instruction:
Given a word and a sentence, identify if the word exists in the sentence.

### Input:
Word: mountain
Sentence: Snow capped mountain peaks are visible in the background

### Output:
Yes, the word "mountain" exists in the given sentence.