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

[Q]: Sentence: 'a group of people holding kites walking on a beach'. How many words contain the letter 'x' in the sentence.
[A]: 0


[Q]: Sentence: 'two elephants are standing by the concrete barrier'. How many words contain the letter 'c' in the sentence.
[A]: 1


[Q]: Sentence: 'group of baby ducks with adult duck in swampy area'. How many words contain the letter 'i' in the sentence.
[A]:
2