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 dog lying down with a blanket on top of it'. How many words contain the letter 'o' in the sentence.

Answer: 5


Question: Sentence: 'a blue and white fire hydrant and two cars parked across the street'. How many words contain the letter 'y' in the sentence.

Answer: 1


Question: Sentence: 'a steam train arriving at a train station'. How many words contain the letter 'x' in the sentence.

Answer:
0