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 sign asking for witnesses is posted in front of a destroyed home'. How many words contain the letter 'y' in the sentence.

Answer: 1


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 smiling  woman wearing a hat holds up a snowboard'. How many words contain the letter 'b' in the sentence.

Answer:
1