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

Q: Sentence: 'a man walking in front of a train station'. How many words contain the letter 'o' in the sentence.

A: 3
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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 man walking through a lake while holding a black umbrella'. How many words contain the letter 'u' in the sentence.

A:
2
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