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

[EX Q]: Sentence: 'martha stewart holding a fluffy siamese cat on her arms'. How many words contain the letter 'a' in the sentence.
[EX A]: 6

[EX Q]: Sentence: 'a woman is holding an umbrella and walking across the street'. How many words contain the letter 't' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a slice of chocolate cake on top of a white plate'. How many words contain the letter 'u' in the sentence.
[EX A]:
0