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 green blue and yellow boat sitting in a harbor'. How many words contain the letter 'o' in the sentence.

Answer: 3


Question: Sentence: 'a motorcycle parked in front of a small cafe'. How many words contain the letter 'n' in the sentence.

Answer: 2


Question: Sentence: 'a young man riding  a surfboard in the ocean'. How many words contain the letter 'r' in the sentence.

Answer:
2