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 man sitting holding a drink with pizzas on the table'. How many words contain the letter 'k' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'cars are parked on the street near a traffic signal'. How many words contain the letter 'u' in the sentence.
[EX A]:
0