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

Sentence: 'the zebra is showing his rear end to the camera'. How many words contain the letter 'r' in the sentence.
3

Sentence: 'a little boy learning to throw a frisbee'. How many words contain the letter 'h' in the sentence.
1

Sentence: 'a young girl sitting in her bed with a laptop on her lap talking on a phone'. How many words contain the letter 'u' in the sentence.

1