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

[EX Q]: Sentence: 'a woman swinging a tennis racquet in the air'. How many words contain the letter 'z' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a cat sitting on a wooden chair look at the camera'. How many words contain the letter 'd' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a wooden table with a white bowl of tangerines and some black chairs'. How many words contain the letter 'r' in the sentence.
[EX A]:
2