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: 'five sheep out in an open field eating straw'. How many words contain the letter 'd' in the sentence.

Answer: 1


Question: Sentence: 'a small terrier stands in the open suitcase ready to go'. How many words contain the letter 'l' in the sentence.

Answer: 1


Question: Sentence: 'man jumping catching frisbee with others watching him'. How many words contain the letter 'm' in the sentence.

Answer:
3