In this task, you need to count the number of words in a sentence that contain the given letter
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Question: Sentence: 'a man and a woman sitting in the backseat as the woman talks on a cell phone'. How many words contain the letter 's' in the sentence.

Answer: 4


Question: Sentence: 'a business man is talking on the phone'. How many words contain the letter 'e' in the sentence.

Answer: 3


Question: Sentence: 'a little girl sitting on the floor reading a book'. How many words contain the letter 'n' in the sentence.

Answer:
3