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: 'black and white photograph of a man using a cell phone on the street'. How many words contain the letter 'r' in the sentence.

Answer: 2


Question: Sentence: 'two men standing next to a black motorcycle'. How many words contain the letter 'q' in the sentence.

Answer: 0


Question: Sentence: 'a christmas tree is standing up in a crowd of people'. How many words contain the letter 'h' in the sentence.

Answer:
1