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 little girl sitting on the floor reading a book'. How many words contain the letter 'n' in the sentence.

Answer: 3


Question: Sentence: 'a ram standing still in an empty pasture'. How many words contain the letter 'x' in the sentence.

Answer: 0


Question: Sentence: 'there are three people that are standing under neath am umbrella'. How many words contain the letter 'p' in the sentence.

Answer:
1