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

Q: Sentence: 'an elephant standing on a green grass area'. How many words contain the letter 'm' in the sentence.

A: 0
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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: 'several young people standing around near some buildings'. How many words contain the letter 'b' in the sentence.

A:
1
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