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

[EX Q]: Sentence: 'a dog lying down with a blanket on top of it'. How many words contain the letter 'o' in the sentence.
[EX A]: 5

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

[EX Q]: Sentence: 'people stand on the railing of a boat traveling on water outside a city'. How many words contain the letter 'q' in the sentence.
[EX A]:
0