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

Q: Sentence: 'a large brown dog with a white deflated ball in its mouth'. How many words contain the letter 'm' in the sentence.

A: 1
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Q: Sentence: 'young girls with backpacks are standing near stairs that look to go to the subway'. How many words contain the letter 'r' in the sentence.

A: 4
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Q: Sentence: 'a rack full of clothes in a small bedroom'. How many words contain the letter 'o' in the sentence.

A:
3
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