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

[EX Q]: Sentence: 'chopsticks and oriental food in white dishes sit on a wooden table'. How many words contain the letter 'z' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a gray cat is wearing a santa hat'. How many words contain the letter 'm' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'people on a beach flying kites and sitting under umbrellas'. How many words contain the letter 'm' in the sentence.
[EX A]:
1