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 large zebra standing out in a grassy field'. How many words contain the letter 'e' in the sentence.

Answer: 3

Question: Sentence: 'people standing in a river surrounding an elephant some are touching it'. How many words contain the letter 'd' in the sentence.

Answer: 2

Question: Sentence: 'five people sitting at a table drinking wine in a restaurant'. How many words contain the letter 'a' in the sentence.

Answer:
5