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

[EX Q]: Sentence: 'two green metal street signs with spanish words on it'. How many words contain the letter 'q' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a table with two different pizzas on it'. How many words contain the letter 'j' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a beautiful old clock tower in a citys historic district'. How many words contain the letter 'a' in the sentence.
[EX A]:
3