In this task, you need to count the number of words in a sentence that contain the given letter

[Q]: Sentence: 'a fire hydrant on the side of the road near a building'. How many words contain the letter 'a' in the sentence.
[A]: 5


[Q]: Sentence: 'a person in the air on skis on a mountain slope'. How many words contain the letter 'w' in the sentence.
[A]: 0


[Q]: Sentence: 'two women in the kitchen holding food dishes'. How many words contain the letter 'r' in the sentence.
[A]:
0