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

[EX Q]: Sentence: 'a person in the air on skis on a mountain slope'. How many words contain the letter 'w' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'people in different boats rowing around a lake'. How many words contain the letter 'b' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a man begins his descent down a ski slope'. How many words contain the letter 'p' in the sentence.
[EX A]:
1