In this task, you need to count the number of words in a sentence that contain the given letter

Sentence: 'a sign that shows you are entering into joshua tree national park'. How many words contain the letter 't' in the sentence.
5

Sentence: 'a room with a mirror and a desk with a monitor'. How many words contain the letter 'z' in the sentence.
0

Sentence: 'a white polar bear with brown spots on its face'. How many words contain the letter 'n' in the sentence.

2