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 woman surfer is on an ocean wave'. How many words contain the letter 's' in the sentence.

Answer: 2


Question: Sentence: 'ther e is a commuter train that is coming on the tracks'. How many words contain the letter 'r' in the sentence.

Answer: 4


Question: Sentence: 'three black cows standing on a green lawn'. How many words contain the letter 'g' in the sentence.

Answer:
2