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

[EX Q]: Sentence: 'two cakes on a table with a piece missing out of one'. How many words contain the letter 'h' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a biscuit that someone has taken a bite out of'. How many words contain the letter 'k' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a couple of pictures of a cat sleeping on a hair brush'. How many words contain the letter 'l' in the sentence.
[EX A]:
2