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 woman on crosscountry skiing through a wooded trail'. How many words contain the letter 'q' in the sentence.
0

Sentence: 'an older couple is playing together with the wii'. How many words contain the letter 'u' in the sentence.

1