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 red and green fire hydrant in son a sidewalk'. How many words contain the letter 'm' in the sentence.

Answer: 0


Question: Sentence: 'young girls with backpacks are standing near stairs that look to go to the subway'. How many words contain the letter 'r' in the sentence.

Answer: 4


Question: Sentence: 'the bright orange walls of a dressing room'. How many words contain the letter 'b' in the sentence.

Answer:
1