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: 'several ties hang from a bar in a closet'. How many words contain the letter 'e' in the sentence.

Answer: 3


Question: Sentence: 'a clock tower next to a building in a city'. How many words contain the letter 'a' in the sentence.

Answer: 3


Question: Sentence: 'a red and white flower in a big vase'. How many words contain the letter 'x' in the sentence.

Answer:
0