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

[EX Q]: Sentence: 'a sign asking for witnesses is posted in front of a destroyed home'. How many words contain the letter 'y' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a woman is smiling next to a dog'. How many words contain the letter 'j' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a person on a bike near a train'. How many words contain the letter 'u' in the sentence.
[EX A]:
0