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

[EX Q]: Sentence: 'a very cute white dog standing by a table with food'. How many words contain the letter 'o' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a photograph of a restroom toilet in front of tiles'. How many words contain the letter 'c' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'there is a person awaiting to cross this street'. How many words contain the letter 'a' in the sentence.
[EX A]:
2