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

[Q]: Sentence: 'a man on a boat pets a dog in a life jacket'. How many words contain the letter 'b' in the sentence.
[A]: 1


[Q]: Sentence: 'a keyboard on a table with a toothbrush a book some sunglasses and coffee'. How many words contain the letter 'e' in the sentence.
[A]: 5


[Q]: Sentence: 'a man holds a laptop on his lap'. How many words contain the letter 'p' in the sentence.
[A]:
2